The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs will complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs will complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is moved into position beneath the mobile launcher for Artemis I at Launch Pad 39B on Oct. 23, 2020, at NASA’s Kennedy Space Center in Florida. The service platform allows access to the RS-25 engines on the Space Launch System core stage for routine work or inspections. The nearly 400-foot-tall mobile launcher will remain at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The platform is in view on a flatbed truck. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The platform is in view on a flatbed truck. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

During a practice run, crawler-transporter 2 (CT-2) is moving inside High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) picked up the space shuttle-era mobile launch platform-3 (MLP-3) inside High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is being driven to the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 entered High Bay 2, and picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, moves out of High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. A truck in front sprays water to reduce dust on the crawlerway. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is at the entrance to High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 entered High Bay 2, and picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, begins its move out of High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, has exited High Bay 2 of the Vehicle Assembly Building (VAB) and moves slowly along the crawlerway at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, moves out of High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, has exited High Bay 2 of the Vehicle Assembly Building (VAB) and moves slowly along the crawlerway at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, has exited High Bay 2 of the Vehicle Assembly Building (VAB) and moves slowly along the crawlerway at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is at the entrance to High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 entered High Bay 2, and picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is at the entrance to High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 entered High Bay 2, and picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is moving inside High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. In view at right is one of the cabs used to drive the crawler. CT-2 picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, has exited High Bay 2 of the Vehicle Assembly Building (VAB) and moves slowly along the crawlerway at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2), with the space shuttle-era mobile launch platform-3 (MLP-3) on top, moves out of High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

During a practice run, crawler-transporter 2 (CT-2) is being driven to the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on May 1, 2019. CT-2 entered High Bay 2, and picked up the space shuttle-era mobile launch platform-3 (MLP-3). The VAB is getting its first commercial tenant. Northrop Grumman signed a Reimbursable Space Act Agreement with NASA for use of the facilities. The company will assemble and test its new OmegA rocket inside the massive facility’s High Bay 2. The company also will modify MLP-3 to serve as the launch vehicle’s assembly and launch platform. Northrop Grumman is developing the OmegA rocket, an intermediate/heavy-class launch vehicle, as part of a launch services agreement with the U.S. Air Force.

A view of the mobile launcher for Artemis I on Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The engine service platform has been lowered and removed from the mobile launcher and is in view on a flatbed carrier. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A view of the base of the mobile launcher for Artemis I and the flame trench below as the engine service platform is being raised into position below the mobile launcher at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from underneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is staged on the top of the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is staged on the top of the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Engineers with Exploration Ground Systems and Jacobs assist with lowering the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform has been lowered and removed from the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is being moved from the pad. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The cab of a flatbed carrier is in view on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It will carry the engine service platform that was lowered and removed from the mobile launcher for Artemis I. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

The engine service platform is being raised beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

A flatbed carrier is in view on the surface of Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. It is carrying the engine service platform that was lowered and removed from the mobile launcher for Artemis I. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Engineers with Exploration Ground Systems and Jacobs assist with raising the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

Workers assists with raising the engine service platform beneath the mobile launcher for Artemis I at Launch Pad 39B at NASA’s Kennedy Space Center in Florida on Oct. 23, 2020. The nearly 400-foot-tall mobile launcher is at the pad while engineers with Exploration Ground Systems and Jacobs complete several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.

KENNEDY SPACE CENTER, FLA. - A worker sandblasts the surface behind the Mobile Launcher Platform on Launch Pad 39A . Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - A worker sandblasts the surface behind the Mobile Launcher Platform on Launch Pad 39A . Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - A worker sandblasts the surface behind the Mobile Launcher Platform on Launch Pad 39A . Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - Sandblasting begins on the Mobile Launcher Platform on Launch Pad 39A to remove corrosion before repainting. Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

Space Shuttle Atlantis (STS-135) is seen atop the Mobile Launch Platform (MLP) during its journey from High Bay 3 in the Vehicle Assembly Building to Launch Pad 39a for its final flight, Tuesday evening, May 31, 2011, at Kennedy Space Center in Cape Canaveral, Fla. The 3.4-mile trek, known as "rollout," will take about seven hours to complete. Atlantis will carry the Raffaello multipurpose logistics module to deliver supplies, logistics and spare parts to the International Space Station. The launch of STS-135 is targeted for July 8. Photo Credit: (NASA/Bill Ingalls)

Space Shuttle Atlantis (STS-135) is seen atop the Mobile Launch Platform (MLP) during its journey from High Bay 3 in the Vehicle Assembly Building to Launch Pad 39a for its final flight, Tuesday evening, May 31, 2011, at Kennedy Space Center in Cape Canaveral, Fla. The 3.4-mile trek, known as "rollout," will take about seven hours to complete. Atlantis will carry the Raffaello multipurpose logistics module to deliver supplies, logistics and spare parts to the International Space Station. The launch of STS-135 is targeted for July 8. Photo Credit: (NASA/Bill Ingalls)

Space Shuttle Atlantis (STS-135) is seen atop the Mobile Launch Platform (MLP) during its journey from High Bay 3 in the Vehicle Assembly Building to Launch Pad 39a for its final flight, Tuesday evening, May 31, 2011, at Kennedy Space Center in Cape Canaveral, Fla. The 3.4-mile trek, known as "rollout," will take about seven hours to complete. Atlantis will carry the Raffaello multipurpose logistics module to deliver supplies, logistics and spare parts to the International Space Station. The launch of STS-135 is targeted for July 8. Photo Credit: (NASA/Bill Ingalls)

The United Launch Alliance (ULA) Atlas V rocket with the Landsat 9 satellite onboard is seen, Monday, Sept. 27, 2021, as the mobile launcher platform (MLP) is rolled back at Vandenberg Space Force Base in California. The Landsat 9 satellite is a joint NASA/U.S. Geological Survey mission that will continue the legacy of monitoring Earth’s land and coastal regions. Photo Credit: (NASA/Bill Ingalls)

The United Launch Alliance (ULA) Atlas V rocket with the Landsat 9 satellite onboard is seen, Monday, Sept. 27, 2021, as the mobile launcher platform (MLP) is rolled back at Vandenberg Space Force Base in California. The Landsat 9 satellite is a joint NASA/U.S. Geological Survey mission that will continue the legacy of monitoring Earth’s land and coastal regions. Photo Credit: (NASA/Bill Ingalls)

The United Launch Alliance (ULA) Atlas V rocket with the Landsat 9 satellite onboard is seen, Monday, Sept. 27, 2021, as the mobile launcher platform (MLP) is rolled back at Vandenberg Space Force Base in California. The Landsat 9 satellite is a joint NASA/U.S. Geological Survey mission that will continue the legacy of monitoring Earth’s land and coastal regions. Photo Credit: (NASA/Bill Ingalls)

The United Launch Alliance (ULA) Atlas V rocket with the Landsat 9 satellite onboard is seen, Monday, Sept. 27, 2021, as the mobile launcher platform (MLP) is rolled back at Vandenberg Space Force Base in California. The Landsat 9 satellite is a joint NASA/U.S. Geological Survey mission that will continue the legacy of monitoring Earth’s land and coastal regions. Photo Credit: (NASA/Bill Ingalls)

KENNEDY SPACE CENTER, FLA. - On Launch Pad 39A, clouds of dust float away from the Mobile Launcher Platform, which is undergoing sandblasting to remove corrosion before repainting. Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - Workers, covered in protective clothing and breathing apparatus, continue sandblasting on the Mobile Launcher Platform on Launch Pad 39A to remove corrosion before repainting. Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - Workers, covered in protective clothing and breathing apparatus, continue sandblasting on the Mobile Launcher Platform on Launch Pad 39A to remove corrosion before repainting. Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

KENNEDY SPACE CENTER, FLA. - Workers, covered in protective clothing and breathing apparatus, continue sandblasting on the Mobile Launcher Platform on Launch Pad 39A to remove corrosion before repainting. Routine maintenance includes sandblasting and repainting as preventive means to minimize corrosion.

CAPE CANAVERAL, Fla. – Near Launch Pad 39B at NASA's Kennedy Space Center in Florida, Director of the Constellation Project Office Pepper E. Phillips speaks to employees and media during the handover ceremony for Mobile Launcher Platform-1. Marking the handover is the change of banner on the platform behind him. On the stage and also participating in the ceremony are Director of Launch Vehicle Processing Rita Willcoxon , Shuttle Launch Director Mike Leinbach, and Manager of MLP Operations with United Space Alliance Brett Raulerson. The platform is being transferred from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Near Launch Pad 39B at NASA's Kennedy Space Center in Florida, Director of the Constellation Project Office Pepper E. Phillips speaks to employees and media during the handover ceremony for Mobile Launcher Platform-1. Marking the handover is the change of banner on the platform behind him. On the stage and also participating in the ceremony are Director of Launch Vehicle Processing Rita Willcoxon , Shuttle Launch Director Mike Leinbach, and Manager of MLP Operations with United Space Alliance Brett Raulerson. The platform is being transferred from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Artist's rendering of the Constellation Program's Ares V rocket on the mobile launcher platform (left) and the Ares I rocket on the platform (right) with the space shuttle in between for comparison. The tower of the mobile launcher will have multiple platforms for personnel access and will be approximately 390 feet tall. The tower will be used in the assembly, testing and servicing of the Ares rockets at Kennedy and will also transport the Ares rockets to the launch pad and provide ground support for launches.

CAPE CANAVERAL, Fla. – – Employees and media gather near Launch Pad 39B at NASA's Kennedy Space Center in Florida for the handover ceremony for Mobile Launcher Platform-1, seen here. The platform is being transferred from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

AARON STANFIELD EXPLAINS CONSTRUCTION OF SCALE MODEL OF SLS MOBILE LAUNCH PLATFORM AND CRAWLER TO PATRICK SCHEUERMANN AND TODD CANNON

JOHNNY STEPHENSON, PATRICK SCHEUERMANN, AND AARON STANFIELD WITH SCALE MODLS OF SLS MOBILE LAUNCH PLATFORM AND CRAWLER

CAPE CANAVERAL, Fla. – Near Launch Pad 39B at NASA's Kennedy Space Center in Florida, employees and media gather listen to Shuttle Launch Director Mike Leinbach during the handover ceremony for Mobile Launcher Platform-1. The platform is being transferred from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Also participating in the ceremony are Rita Willcoxon, director of Launch Vehicle Processing at Kennedy, Pepper E. Phillips, director of the Constellation Project Office, and Brett Raulerson, manager of MLP Operations with United Space Alliance. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Near Launch Pad 39B at NASA's Kennedy Space Center in Florida, Shuttle Launch Director Mike Leinbach speaks to the employees and media during the handover ceremony for Mobile Launcher Platform-1. The platform is being transferred from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Also participating in the ceremony are (left) Rita Willcoxon, director of Launch Vehicle Processing at Kennedy, (right) Pepper E. Phillips, director of the Constellation Project Office, and (not visible) Brett Raulerson, manager of MLP Operations with United Space Alliance. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Artist's rendering of the Constellation Program's mobile launcher platform with an Ares I rocket attached. The tower of the mobile launcher will have multiple platforms for personnel access and will be approximately 390 feet tall. The tower will be used in the assembly, testing and servicing of the Ares rockets at Kennedy and will also transport the Ares rockets to the launch pad and provide ground support for launches.

CAPE CANAVERAL, Fla. -- Artist's rendering of the empty Constellation Program's mobile launcher platform planned for the Ares I rocket. The tower of the mobile launcher will have multiple platforms for personnel access and will be approximately 390 feet tall. The tower will be used in the assembly, testing and servicing of the Ares rockets at Kennedy and will also transport the Ares rockets to the launch pad and provide ground support for launches.

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39B, a worker on a crane inspects pipes on the Mobile Launcher Platform where Space Shuttle Atlantis sits. Earlier today a leak in a ground support liquid hydrogen vent line on the south side of the Mobile Launcher Platform caused a scrub of the launch of Atlantis on mission STS-110. An engineering team is assessing the situation to determine the best method to repair the hydrogen line. The turnaround plan includes time to perfor weld repairs and return the vehicle to a timeline to resume the countdown

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39B, an inspection team gathers at the foot of Mobile Launcher Platform where Space Shuttle Atlantis sits. Earlier today a leak in a ground support liquid hydrogen vent line on the south side of the Mobile Launcher Platform caused a scrub of the launch of Atlantis on mission STS-110. An engineering team is assessing the situation to determine the best method to repair the hydrogen line. The turnaround plan includes time to perfor weld repairs and return the vehicle to a timeline to resume the countdown

KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39B, workers on a crane inspect pipes on the Mobile Launcher Platform where Space Shuttle Atlantis sits. Earlier today a leak in a ground support liquid hydrogen vent line on the south side of the Mobile Launcher Platform caused a scrub of the launch of Atlantis on mission STS-110. An engineering team is assessing the situation to determine the best method to repair the hydrogen line. The turnaround plan includes time to perfor weld repairs and return the vehicle to a timeline to resume the countdown

KENNEDY SPACE CENTER, FLA. - The Space Shuttle Discovery on its Mobile Launcher Platform makes its slow 3.4-mile trek from the Vehicle Assembly Building to Launch Pad 39A in preparation for the STS-82 mission. In the foreground is the U.S. flag at the Press Site area. A seven-member crew will perform the second servicing of the orbiting Hubble Space Telescope (HST) during the 10-day STS-82 mission, which is targeted for a Feb. 11 liftoff.

KENNEDY SPACE CENTER, FLA. - The rising sun and some scattered clouds provide a picturesque backdrop for the Space Shuttle Discovery as it travels along the crawlerway toward Launch Pad 39A in preparation for the STS-82 mission. The Shuttle is on a Mobile Launcher Platform, and the entire assemblage is being carried by a large, tracked vehicle called the crawler transporter. A seven-member crew will perform the second servicing of the orbiting Hubble Space Telescope (HST) during the 10-day STS-82 flight, whcih is targeted for a Feb. 11 liftoff.

KENNEDY SPACE CENTER, FLA. - The Space Shuttle Discovery on its Mobile Launcher Platform slowly moves through the high bay doors of the Vehicle Assembly Building en route to Launch Pad 39A, where Discovery is scheduled to lift off on the STS-82 mission on Feb. 11. A seven-member crew will perform the second servicing of the orbiting Hubble Space Telescope (HST) during the 10-day STS-82 mission.

KENNEDY SPACE CENTER, FLA. - Workers on the mobile service tower on Launch Pad 17-B, Cape Canaveral Air Force Station, watch as the Space Infrared Telescope Facility (SIRTF) clears the platform. SIRTF will be attached to the Delta II rocket and encapsulated in its fairing before launch. Consisting of three cryogenically cooled science instruments and an 0.85-meter telescope, SIRTF is one of NASA’s largest infrared telescopes to be launched. It is the fourth and final element in NASA’s family of orbiting “Great Observatories.” SIRTF will obtain images and spectra by detecting the infrared energy, or heat, radiated by objects in space. Most of this infrared radiation is blocked by the Earth's atmosphere and cannot be observed from the ground.

KENNEDY SPACE CENTER, FLA. -Crawler-transporter (CT) number 2, moves away from the Vehicle Assembly Building, with a Mobile Launcher Platform on top, on a test run to the launch pad. The CT recently underwent modifications to the cab. The CT moves Space Shuttle vehicles between the VAB and launch pad. Moving on four double-tracked crawlers, the CT uses a laser guidance system and a leveling system for the journey that keeps the top of a Space Shuttle vertical within plus- or minus-10 minutes of arc. The system enables the CT-MLP-Shuttle to negotiate the ramp leading to the launch pads and keep the load level. Unloaded, the CT weighs 6 million pounds.

Members of the news media view the 10 levels of new work platforms in High Bay 3 inside the Vehicle Assembly Building (VAB) during a tour of NASA's Kennedy Space Center in Florida with Center Director Bob Cabana. The final platform, A north, was recently installed. The platforms will surround the Space Launch System and Orion spacecraft on the mobile launcher during processing to prepare for the first test flight. The Ground Systems Development and Operations Program is overseeing upgrades to the VAB, including installation of the new work platforms.

A view of the north side of the Vehicle Assembly Building (VAB) from the top of the mobile launcher tower at NASA's Kennedy Space Center in Florida. Inside the VAB, 10 levels of platforms, 20 platform halves altogether, have been installed in High Bay 3. The platforms will surround NASA's Space Launch System (SLS) rocket and the Orion spacecraft and allow access during processing for missions, including the first uncrewed flight test of Orion atop the SLS rocket in 2018. Crawler-transporter 2 will carry the rocket and spacecraft atop the mobile launcher to Launch Pad 39B for Exploration Mission 1. The Ground Systems Development and Operations Program, with support from the center's Engineering Directorate, is overseeing upgrades and modifications to the VAB and the mobile launcher.

CAPE CANAVERAL, Fla. – An aerial view of a mobile launcher platform that is parked in the Launch Complex 39 Area at NASA's Kennedy Space Center in Florida. The platform, which is a moveable base for the launch of space shuttle, is a two-story steel structure 25 feet high, 160 feet long and 135 feet wide. It is constructed of welded steel up to 6 inches thick. The platform rests on six 22-foot-tall pedestals. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – An aerial view of a mobile launcher platform that is parked in the Launch Complex 39 Area at NASA's Kennedy Space Center in Florida. The platform, which is a moveable base for the launch of space shuttle, is a two-story steel structure 25 feet high, 160 feet long and 135 feet wide. It is constructed of welded steel up to 6 inches thick. The platform rests on six 22-foot-tall pedestals. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – An aerial view of a mobile launcher platform that is parked in the Launch Complex 39 Area at NASA's Kennedy Space Center in Florida. The platform, which is a moveable base for the launch of space shuttle, is a two-story steel structure 25 feet high, 160 feet long and 135 feet wide. It is constructed of welded steel up to 6 inches thick. The platform rests on six 22-foot-tall pedestals. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Water cascades over the side of the mobile launcher platform on Launch Pad 39B at NASA's Kennedy Space Center in Florida. The sound suppression system is being tested on the platform. Pad 39B will be the site of the first Ares vehicle launch, including the Ares I-X flight test that is targeted for summer 2009. The mobile launcher platform was handed over to the Constellation Program and modified for the Ares I-X flight test. It is being tested before being moved to the Vehicle Assembly Building for assembly of the Ares I-X rocket. A sound suppression water system is in¬stalled on the pads to protect against damage by acoustical energy and rocket exhaust reflected from the flame trench and mobile launcher plat¬form during a launch. The sound suppression system includes an elevated 290-foot-high water tank with a capacity of 300,000 gallons. The water releases just prior to the ignition of the rocket and flows through 7-foot-diameter pipes for about 20 seconds. A torrent of water will flow onto the mobile launcher platform from six large quench nozzles, or “rainbirds,” mounted on its surface. The rainbirds are 12 feet high. The two in the center are 42 inches in diameter; the other four have a 30-inch diameter. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – NASA's Kennedy Space Center management host a ceremony near Launch Pad 39B to mark the handover of Mobile Launcher Platform-1 (behind them) from NASA's Space Shuttle Program to the Constellation Program for the Ares I-X flight test targeted for this summer. Seated are (left) Shuttle Launch Director Mike Leinbach and (right) Pepper E. Phillips, director of the Constellation Project Office, and Brett Raulerson, manager of MLP Operations with United Space Alliance. At the podium is Rita Willcoxon, director of Launch Vehicle Processing at Kennedy. Constructed in 1964, the mobile launchers used in Apollo/Saturn operations were modified for use in shuttle operations. With cranes, umbilical towers and swing arms removed, the mobile launchers were renamed Mobile Launcher Platforms, or MLPs. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, workers prepare for the arrival of the third segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Jack Pfaller

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, preparations are under way for the arrival of the third segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Jack Pfaller

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the third segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program is lifted from the tractor-trailer on which it was delivered. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Jack Pfaller

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a tractor-trailer delivers the fourth segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Troy Cryder

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a tractor-trailer delivers the third segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Jack Pfaller

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a crane is enlisted to support the arrival of the third segment of the launch mount for a new mobile launcher, or ML, being constructed to support NASA's future human spaceflight program. The construction is taking place in the mobile launcher park site north of Kennedy's Vehicle Assembly Building. The new launcher is 355 feet tall and has multiple platforms for personnel access. The base of the launcher is lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and a taller rocket. For information on NASA's future plans, visit http:__www.nasa.gov. Photo credit: NASA_Jack Pfaller

KENNEDY SPACE CENTER, FLA. -- A crawler transporter moves Space Shuttle Discovery, secured atop a mobile launch platform, along the crawlerway from the Vehicle Assembly Building to Launch Pad 39A on a balmy Florida morning. First motion out of the VAB was at 6:47 a.m. EDT. The crawler transporter, mobile launch platform and unfueled space shuttle weigh a total of approximately 17.5 million pounds. Rollout is a milestone for Discovery's launch to the International Space Station on mission STS-120, targeted for Oct. 23. The crew will be delivering and installing the Italian-built U.S. Node 2, named Harmony. The pressurized module will act as an internal connecting port and passageway to additional international science labs and cargo spacecraft. In addition to increasing the living and working space inside the station, it also will serve as a work platform outside for the station's robotic arm. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- The crawler transporter, moving Space Shuttle Discovery atop its mobile launch platform from the Vehicle Assembly Building, heads in the direction of Launch Pad 39A. The journey has reached the intersection in the crawlerway of the paths to Pad 39A and Pad 39B. First motion out of the VAB was at 6:47 a.m. EDT. The crawler transporter, mobile launch platform and unfueled space shuttle weigh a total of approximately 17.5 million pounds. Rollout is a milestone for Discovery's launch to the International Space Station on mission STS-120, targeted for Oct. 23. The crew will be delivering and installing the Italian-built U.S. Node 2, named Harmony. The pressurized module will act as an internal connecting port and passageway to additional international science labs and cargo spacecraft. In addition to increasing the living and working space inside the station, it also will serve as a work platform outside for the station's robotic arm. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- The crawler transporter, moving Space Shuttle Discovery atop its mobile launch platform from the Vehicle Assembly Building, follows the path to Launch Pad 39A. The journey has reached the intersection in the crawlerway of the roads to Pad 39A and Pad 39B. First motion out of the VAB was at 6:47 a.m. EDT. The crawler transporter, mobile launch platform and unfueled space shuttle weigh a total of approximately 17.5 million pounds. Rollout is a milestone for Discovery's launch to the International Space Station on mission STS-120, targeted for Oct. 23. The crew will be delivering and installing the Italian-built U.S. Node 2, named Harmony. The pressurized module will act as an internal connecting port and passageway to additional international science labs and cargo spacecraft. In addition to increasing the living and working space inside the station, it also will serve as a work platform outside for the station's robotic arm. Photo credit: NASA/George Shelton

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, progress continues on the construction of a new mobile launcher, or ML, for the Constellation Program as a crane lifts the third section of the launcher's tower above the platform. Installation of the first section was on Sept. 24, and the second, on Oct. 15. The tower will have multiple platforms for personnel access and be approximately 345 feet tall. The launcher is being built at the mobile launcher park site area located north of Kennedy's Vehicle Assembly Building to support the Ares I rocket. The ML will provide a base to launch the Ares I, designed to transport the Orion crew exploration vehicle, its crew and cargo to low Earth orbit. The base is being made lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and taller rocket. For information on the Ares I, visit http://www.nasa.gov/ares. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the third section of the tower for a new mobile launcher, or ML, for the Constellation Program is suspended by crane above the platform. Installation of the first section was on Sept. 24, and the second, on Oct. 15. The tower will have multiple platforms for personnel access and be approximately 345 feet tall. The launcher is being built at the mobile launcher park site area located north of Kennedy's Vehicle Assembly Building to support the Ares I rocket. The ML will provide a base to launch the Ares I, designed to transport the Orion crew exploration vehicle, its crew and cargo to low Earth orbit. The base is being made lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the heavier load of the tower and taller rocket. For information on the Ares I, visit http://www.nasa.gov/ares. Photo credit: NASA/Jack Pfaller

STS-28 Columbia, Orbiter Vehicle (OV) 102, arrives at Kennedy Space Center (KSC) Launch Complex (LC) Pad 39B. View taken from ground level, shows OV-102 with external tank (ET) and solid rocket boosters (SRBs) mounted atop mobile launcher platform and the fixed service structure (rotating service structure (RSS) retracted) alongside. Catwalk at the 195 ft level is in place. Crawler transporter remains in position under mobile launcher platform. Spotlights and floodlights illuminate the launch complex against the darkness of the night. View provided by KSC with alternate number KSC-89PC-683.

STS-26 Discovery, Orbiter Vehicle (OV) 103, lifts off from mobile launcher platform at Kennedy Space Center (KSC) Launch Complex (LC) pad 39B. Riding atop the orange external tank (ET), OV-103 heads for Earth orbit as the exhaust plumes from the two solid rocket boosters (SRBs) cover the mobile launcher platform and the area surrounding the launch pad. SRB firings are reflected in a nearby waterway. In the foreground are trees and several birds in flight. STS-26 marks OV-103's first flight since September 1985 and NASA's first manned mission since the 51L Challenger accident, 01-28-86.

KENNEDY SPACE CENTER, FLA. - After leaving the Vehicle Assembly Building, the Space Shuttle Discovery makes its slow - up to 1 mile per hour - trek along the crawlerway to Launch Pad 39A in preparation for the STS-82 mission. The Shuttle is assembled on a Mobile Launcher Platform, seen in this view taken from above, and the entire assemblage is carried out to the launch pad on the crawler transporter, which is underneath the MLP. A seven-member crew will perform the second servicing of the orbiting Hubble Space Telescope (HST) during the 10-day STS-82 mission, which is targeted for a Feb. 11 liftoff.

KENNEDY SPACE CENTER, FLA. - A high-flying bird takes a closer look at the Mobile Launcher Platform (MLP) number 3 with twin solid rocket boosters bolted to it as it crawls toward Launch Pad 39A, in the background. The crawler is moving along the crawlerway at various speeds up to 1 mph in an effort to achieve vibration data gathering goals as it travels toward Launch Pad 39A and then returns. The boosters are braced at the top for stability. The primary purpose of these rollout tests is to gather data to develop future maintenance requirements on the transport equipment and the flight hardware. Various parts of the MLP and crawler transporter have been instrumented with vibration data collection equipment.

KENNEDY SPACE CENTER, FLA. - In the Vehicle Assembly Building at NASA’s Kennedy Space Center, Space Shuttle Discovery is surrounded by work platforms as it awaits rollout to Launch Pad 39B for Return to Flight mission STS-114 to the International Space Station. It rests on the Mobile Launcher Platform, which will be moved to the pad by the double-tracked Crawler-Transporter. This launch will be Discovery’s 31st flight. The launch window is May 15 to June 3.

KENNEDY SPACE CENTER, FLA. - In the Vehicle Assembly Building at NASA’s Kennedy Space Center, Space Shuttle Discovery is surrounded by work platforms as it awaits rollout to Launch Pad 39B for Return to Flight mission STS-114 to the International Space Station. It rests on the Mobile Launcher Platform, which will be moved to the pad by the double-tracked Crawler-Transporter. This launch will be Discovery’s 31st flight. The launch window is May 15 to June 3.

CAPE CANAVERAL, Fla. – The sound suppression system is tested on the mobile launcher platform on Launch Pad 39B at NASA's Kennedy Space Center in Florida. Pad 39B will be the site of the first Ares vehicle launch, including the Ares I-X flight test that is targeted for summer 2009. The mobile launcher platform was handed over to the Constellation Program and modified for the Ares I-X flight test. It is being tested before being moved to the Vehicle Assembly Building for assembly of the Ares I-X rocket. A sound suppression water system is in¬stalled on the pads to protect against damage by acoustical energy and rocket exhaust reflected from the flame trench and mobile launcher plat¬form during a launch. The sound suppression system includes an elevated 290-foot-high water tank with a capacity of 300,000 gallons. The water releases just prior to the ignition of the rocket and flows through 7-foot-diameter pipes for about 20 seconds. A torrent of water will flow onto the mobile launcher platform from six large quench nozzles, or “rainbirds,” mounted on its surface. The rainbirds are 12 feet high. The two in the center are 42 inches in diameter; the other four have a 30-inch diameter. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – The sound suppression system is tested on the mobile launcher platform on Launch Pad 39B at NASA's Kennedy Space Center in Florida. Pad 39B will be the site of the first Ares vehicle launch, including the Ares I-X flight test that is targeted for summer 2009. The mobile launcher platform was handed over to the Constellation Program and modified for the Ares I-X flight test. It is being tested before being moved to the Vehicle Assembly Building for assembly of the Ares I-X rocket. A sound suppression water system is in¬stalled on the pads to protect against damage by acoustical energy and rocket exhaust reflected from the flame trench and mobile launcher plat¬form during a launch. The sound suppression system includes an elevated 290-foot-high water tank with a capacity of 300,000 gallons. The water releases just prior to the ignition of the rocket and flows through 7-foot-diameter pipes for about 20 seconds. A torrent of water will flow onto the mobile launcher platform from six large quench nozzles, or “rainbirds,” mounted on its surface. The rainbirds are 12 feet high. The two in the center are 42 inches in diameter; the other four have a 30-inch diameter. Photo credit: NASA/Jim Grossmann

An early morning view of the iconic Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. To the right is the Launch Control Center. In the background is the mobile launcher. All 10 levels of new work platforms, 20 platform halves altogether, have been installed in VAB High Bay 3 for the agency's Space Launch System (SLS) rocket and Orion spacecraft. The Ground Systems Development and Operations Program is overseeing upgrades to the VAB, including installation of the new platforms to prepare for the first test flight of Orion atop the SLS from Launch Pad 39B.

The engine service platform that will provide access to the core stage of the Space Launch System (SLS) rocket is moved beneath the mobile launcher (ML) in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on June 14, 2019. The large work platform is designed to provide unrestricted access to the RS-25 engines on the SLS core stage from the ML. The service platform will be used for Artemis 1 and subsequent missions. For Artemis 1, the Orion spacecraft will launch atop the SLS rocket from Launch Pad 39B and begin an approximately three-week mission that will send Orion thousands of miles beyond the Moon. Exploration Ground Systems is overseeing work on the ML.

The engine service platform that will provide access to the core stage of the Space Launch System (SLS) rocket is moved beneath the mobile launcher (ML) in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on June 14, 2019. The large work platform is designed to provide unrestricted access to the RS-25 engines on the SLS core stage from the ML. The service platform will be used for Artemis 1 and subsequent missions. For Artemis 1, the Orion spacecraft will launch atop the SLS rocket from Launch Pad 39B and begin an approximately three-week mission that will send Orion thousands of miles beyond the Moon. Exploration Ground Systems is overseeing work on the ML.

KENNEDY SPACE CENTER, FLA. - Employees at KSC walk alongside orbiter Endeavour as it rolls to the Vehicle Assembly Building. In the VAB it will be mated to the External Tank/Solid Rocket Boosters atop the Mobile Launcher Platform. Endeavour is targeted to launch May 30, 2002, on mission STS-111 to the International Space Station. Mission goals include delivering and installing the Mobile Base System to complete the Canadian Mobile Service System and carrying the Expedition 5 crew to the Station for rotation with Expedition 4

KENNEDY SPACE CENTER, FLA. -- Orbiter Endeavour rolls toward the open bay door of the Vehicle Assembly Building where it will be mated to the External Tank_Solid Rocket Boosters atop the Mobile Launcher Platform. Endeavour is targeted to launch May 30, 2002, on mission STS-111 to the International Space Station. Mission goals include delivering and installing the Mobile Base System to complete the Canadian Mobile Service System and carrying the Expedition 5 crew to the Station for rotation with Expedition 4

KENNEDY SPACE CENTER, FLA. -- Orbiter Endeavour is rolled out of the Orbiter Processing Facility atop a transporter. The orbiter is being moved to the Vehicle Assembly Building for mating to the External Tank/Solid Rocket Boosters atop the Mobile Launcher Platform. Endeavour is targeted to launch May 30, 2002, on mission STS-111 to the International Space Station. Mission goals include delivering and installing the Mobile Base System to complete the Canadian Mobile Service System and carrying the Expedition 5 crew to the Station for rotation with Expedition 4

CAPE CANAVERAL, Fla. – At the turn basin in the Launch Complex 39 Area of NASA's Kennedy Space Center in Florida, the barge carrying a girder for a new mobile launcher is moved closer to the ramp. The new mobile launcher will be the base for the Ares rockets to launch the Orion crew exploration vehicle and the cargo vehicle. The base is being made lighter than space shuttle mobile launcher platforms so the crawler-transporter can pick up the added load of the 345-foot tower and taller rocket. When the structural portion of the new mobile launcher is complete, umbilicals, access arms, communications equipment and command/control equipment will be installed. Photo credit: NASA/Jack Pfaller