Masten Space Systems employees prepare its rocket to flight test NASA -licensed Psionic navigation doppler lidar technology that enables precision landing on celestial bodies where GPS for navigation only available on Earth is not an option.

Masten Space Systems vertical takeoff vertical landing rocket launched September 10, 2020 to flight test NASA-licensed Psionic navigation doppler lidar technology that enables precision landing on celestial bodies where GPS for navigation only available on Earth is not an option.

A NASA F/A-18 research aircraft flies near NASA’s Armstrong Flight Research Center in Edwards, California, on Feb. 24, 2025, testing a commercial precision landing technology for future space missions. The Psionic Space Navigation Doppler Lidar (PSNDL) system is installed in a pod located under the right wing of the aircraft.

This photo shows the instrumentation and equipment inside the Spacewedge #3, a remotely-piloted research vehicle flown at the Dryden Flight Research Center, Edwards, California, to help develop technology for autonomous return systems for spacecraft as well as methods to deliver large Army cargo payloads to precise landings.

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a technician installs hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – A Huey helicopter tests hazard avoidance instrumentation at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks using the instrument. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Photo credit: NASA/Jim Grossmann

JSC2000E01555 (January 2000) --- A one-dimensional representation of Earth indicates only a portion of the total anticipated coverage area for the Shuttle Radar Topography Mission (SRTM). The primary objective of SRTM is to acquire a high-resolution topographic map of the Earth's land mass (between 60 degrees north and 56 degrees south latitude) and to test new technologies for deployment of large rigid structures and measurement of their distortions to extremely high precision.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

A SpaceX Falcon 9 rocket carrying Intuitive Machines’ Nova-C lunar lander lifts off from Launch Pad 39A at NASA’s Kennedy Space Center in Florida at 1:05 a.m. EST on Thursday, Feb. 15, 2024. As part of NASA’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign, Intuitive Machines’ first lunar mission will carry NASA science and commercial payloads to the Moon to study plume-surface interactions, space weather/lunar surface interactions, radio astronomy, precision landing technologies, and a communication and navigation node for future autonomous navigation technologies.

As landing technology improves and these landing ellipses shrink, missions can aim for more precise landings, opening up new areas of Mars to explore. Perseverance takes it two steps further than previous missions. First, it uses a new algorithm to time its parachute deployment based on distance to its target rather than vehicle velocity. This shrinks the landing ellipse to 4.8 miles by 4.1 miles (7.7 kilometers by 6.6 kilometers). Second, the rover uses maps stored in its memory to avoid landing hazards within that smaller ellipse during its propulsive descent phase. This allows Perseverance to target safe landing locations within Jezero Crater. The rover is set to land on Feb. 18, 2021. Improvements in interplanetary navigation tightened the landing ellipse of Mars Pathfinder in comparison with missions before it. It landed by bouncing on the surface with airbags, and has the largest ellipse in this image, measuring 124.3 miles by 43.5 miles (200 by 70 kilometers). The Phoenix and InSight landers used retrorockets to land on three legs, but still had large possible landing areas about 80.8 miles (130 kilometers) long. In 2012, the Curiosity team developed guided entry technology, shrinking its landing ellipse further. The spacecraft used small rockets to steer itself through the atmosphere as it headed toward Gale Crater. https://photojournal.jpl.nasa.gov/catalog/PIA24349

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA_Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, hazard avoidance instrumentation it being prepared for installation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a technician tests hazard avoidance instrumentation recently installed on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Dmitri Gerondidakis

CAPE CANAVERAL, Fla. – Near the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, a space agency team installed and tested hazard avoidance instrumentation on a Huey helicopter. Led by the Johnson Space Center and supported by Jet Propulsion Laboratory and Langley Research Center, the Autonomous Landing Hazard Avoidance Technology, or ALHAT, laser system provides a planetary lander the ability to precisely land safely on a surface while detecting any dangerous obstacles such as rocks, holes and slopes. Just north of Kennedy's Shuttle Landing Facility runway, a rock- and crater-filled planetary scape has been built so engineers can test the ability to negotiate away from risks. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am, entertainer and member of The Black Eyed Peas, hears about the space shuttle mission plaques lining the lobby of the Launch Control Center (LCC) from NASA's Charlie Blackwell Thompson. Also viewing the plaques in the background are NASA Deputy Administrator Lori Garver and former astronaut Leland Melvin, NASA associate administrator for Education. The visit to the LCC followed their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – NASA Tweetup participants hear a presentation by Expedition 25 astronaut Doug Wheelock in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am (center), entertainer and member of The Black Eyed Peas, talks with employees on hand during his tour of the Operations and Checkout Building (O&C). The visit to the O&C followed his participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In the Vehicle Assembly Building at NASA Kennedy Space Center in Florida, Will.i.am, entertainer and member of The Black Eyed Peas, and television personality Bill Nye the Science Guy pose in front of a picture of a space shuttle being lifted into a high bay following their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Participants of a NASA Tweetup pose for a group portrait at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Behind them, the countdown clock ticks off the seconds to launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Television personality Bill Nye the Science Guy talks to the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Expedition 25 astronaut Doug Wheelock talks to the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – NASA Deputy Administrator Lori Garver addresses the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am (left), entertainer and member of The Black Eyed Peas, receives a briefing from Larry Price, Lockheed Martin deputy program manager, on the Orion Multi Purpose Crew Vehicle and the Space Launch System heavy-lift rocket during a tour of the Operations and Checkout Building (O&C). The visit to the O&C followed Will.i.am's participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, presenters and Kennedy personnel supporting a NASA Tweetup get a close-up look at space shuttle Endeavour being stored in the Vehicle Assembly Building. From left are Yves Lamothe, lead systems engineer for the 21st Century Ground Systems Program at Kennedy; NASA Deputy Administrator Lori Garver; former astronaut Leland Melvin, NASA associate administrator for Education; and Will.i.am, entertainer and member of The Black Eyed Peas. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – NASA Administrator Charles Bolden addresses the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – NASA Administrator Charles Bolden addresses the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – NASA Deputy Administrator Lori Garver addresses the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Former astronaut Leland Melvin, NASA associate administrator for Education, looks on at left. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Television personality Bill Nye the Science Guy talks to the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am (at center), entertainer and member of The Black Eyed Peas, tours Firing Room 4 in the Launch Control Center accompanied by NASA Deputy Administrator Lori Garver (green jacket); former astronaut Leland Melvin, NASA associate administrator for Education (blue flight suit); and Yves Lamothe, lead systems engineer for the 21st Century Ground Systems Program at Kennedy. The visit to the firing room followed their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – A Tweetup gets under way in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am (left), entertainer and member of The Black Eyed Peas, accompanied by Yves Lamothe, lead systems engineer for the 21st Century Ground Systems Program at Kennedy; former astronaut Leland Melvin, NASA associate administrator for Education (blue flight suit), and NASA Deputy Administrator Lori Garver (green jacket), receives a tour of the Operations and Checkout Building (O&C) from Larry Price, Lockheed Martin deputy program manager. The visit to the O&C followed their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, Will.i.am, entertainer and member of The Black Eyed Peas, gets a close-up look at the agency's Orion Multi Purpose Crew Vehicle during a tour of the Operations and Checkout Building (O&C). Beside him is Larry Price, Lockheed Martin deputy program manager, the tour escort. Behind him are former astronaut Leland Melvin, NASA associate administrator for Education (blue flight suit), and NASA Deputy Administrator Lori Garver (green jacket). The visit to the O&C followed their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA Kennedy Space Center in Florida, presenters in a NASA Tweetup tour the Operations and Checkout Building (O&C). Listening to a briefing from from Larry Price, Lockheed Martin deputy program manager, on the Orion Multi Purpose Crew Vehicle are, from left, NASA Deputy Administrator Lori Garver (green jacket); former astronaut Leland Melvin, NASA associate administrator for Education (blue flight suit); Yves Lamothe, lead systems engineer for the 21st Century Ground Systems Program at Kennedy; Will.i.am, entertainer and member of The Black Eyed Peas; and Lars Perkins, chair of the Education and Public Outreach Committee of the NASA Advisory Council. The visit to the O&C followed their participation in a NASA Tweetup. The Tweetup is part of prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch and provides the opportunity for tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from Space Launch Complex-41 on Cape Canaveral Air Force Station was at 10:02 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Former astronaut Leland Melvin, NASA associate administrator for Education, takes part in a Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Melvin flew on the space shuttle Atlantis' STS-122 mission in 2008 and STS-129 mission in 2009. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Will.i.am, left, entertainer and member of The Black Eyed Peas, and former astronaut Leland Melvin, NASA associate administrator for Education, take part in a Tweetup at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Behind them glint the lights of the launch countdown clock. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – From left, Lars Perkins, chair of the Education and Public Outreach Committee of the NASA Advisory Council; Will.i.am, entertainer and member of the pop group The Black Eyed Peas; NASA Deputy Administrator Lori Garver; former astronaut Leland Melvin, NASA associate administrator for Education; and television personality Bill Nye the Science Guy share a light moment with the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – From left, former astronaut Leland Melvin, NASA associate administrator for Education; Will.i.am, entertainer and member of The Black Eyed Peas; and NASA Deputy Administrator Lori Garver share a light moment with the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – From left, Yves Lamothe, lead systems engineer for the 21st Century Ground Systems Program at NASA Kennedy Space Center; NASA Administrator Charles Bolden; Will.i.am, entertainer and member of The Black Eyed Peas; and former astronaut Leland Melvin, NASA associate administrator for Education, take part in a Tweetup at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Behind them, the countdown clock ticks off the seconds to launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – From left, Lars Perkins, chair of the Education and Public Outreach Committee of the NASA Advisory Council; former astronaut Leland Melvin, NASA associate administrator for Education; Will.i.am, entertainer and member of The Black Eyed Peas; and NASA Deputy Administrator Lori Garver talk to the participants of a NASA Tweetup in a tent set up at NASA Kennedy Space Center's Press Site in Florida during prelaunch activities for the agency’s Mars Science Laboratory (MSL) launch. Participants in the Tweetup are given the opportunity to listen to agency briefings, tour locations on the center normally off limits to visitors, and get a close-up view of Space Launch Complex-41 on Cape Canaveral Air Force Station. The tweeters will share their experiences with followers through the social networking site Twitter. The MSL mission will pioneer precision landing technology and a sky-crane touchdown to place a car-sized rover, Curiosity, near the foot of a mountain inside Gale Crater on Aug. 6, 2012. During a nearly two-year prime mission after landing, the rover will investigate whether the region has ever offered conditions favorable for microbial life, including the chemical ingredients for life. Liftoff of MSL aboard a United Launch Alliance Atlas V rocket from pad 41 is planned during a launch window which extends from 10:02 a.m. to 11:45 a.m. EST on Nov. 26. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Frankie Martin