The sun sets on Cape Canaveral Air Force Station’s Launch Complex 41 in Florida during a Boeing/United Launch Alliance (ULA) emergency egress system demonstration on June 19, 2018. The emergency egress system features folding seats attached to slide wires. In the unlikely event of an emergency on launch day prior to liftoff, each person on the Crew Access Tower would get his or her own seat and slide more than 1,300 feet to a safe area. The Boeing CST-100 Starliner will launch on a ULA Atlas V rocket, carrying astronauts to the International Space Station

Astronaut Nicole Mann gets suited up for a Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The emergency egress system will allow for a safe evacuation in the unlikely event of an emergency on the launch pad on launch day. It can carry up to 20 people more than 1,300 feet away from the crew access tower and the launch vehicle.

Astronauts participate in a Boeing/United Launch Alliance (ULA) emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The system is designed to safely evacuate astronauts and ground crews in the unlikely event of an emergency on the launch pad on launch day. The Boeing CST-100 Starliner will launch on a ULA Atlas V rocket, carrying astronauts to the International Space Station.

NASA astronauts Bob Behnken and Suni Williams get suited up for a Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. Behnken and other astronauts tested the system, which is designed to evacuate them safely in the unlikely event of an emergency on the launch pad on launch day. The Boeing CST-100 Starliner will launch on a ULA Atlas V rocket, carrying astronauts to the International Space Station.

Chris Ferguson, Boeing’s Director of Crew and Mission Operations for their Commercial Crew Program, is helped into his suit in preparation for a Boeing/United Launch Alliance emergency egress system demonstration on June 19, 2018. A veteran of three space shuttle missions, he commanded Atlantis in STS-135, the final mission of the Space Shuttle Program. The demonstration was held at Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The emergency egress system provides an escape route in the unlikely event of an emergency on the launch pad on launch day.

Two mine-resistant ambush protected vehicles, or MRAPs, sit ready to receive astronauts and ground crews during a Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The emergency egress system will provide an escape route in the unlikely event of an emergency on the launch pad on launch day.

Astronauts participate in a Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The system features seats attached to slide wires which would carry astronauts and ground crew more than 1,300 feet away from the crew access tower in the unlikely event of an emergency prior to liftoff on launch day.

Commercial Crew astronauts participate in a Boeing/United Launch Alliance (ULA) emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The emergency egress system features folding seats attached to slide wires. In the unlikely event of an emergency prior to liftoff on launch day, each person on the Crew Access Tower would get his or her own seat and slide more than 1,300 feet to a safe area.

Astronaut Suni Williams gets suited up in preparation for the Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. The emergency egress system features seats that attach to slide wires. It can carry astronauts and ground crew more than 1,300 feet away from the crew access tower and the launch vehicle in the unlikely event of an emergency before liftoff.

An astronaut heads into a mine-resistant ambush protected vehicle, or MRAP, during a Boeing/United Launch Alliance emergency egress system demonstration at Cape Canaveral Air Force Station’s Launch Complex 41 in Florida on June 19, 2018. NASA’s MRAPs offer a mobile bunker for astronauts and ground crews, should they need to escape from the launch pad quickly in an emergency.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is being prepared to launch the Geostationary Operational Environmental Satellite, or GOES-S. It will be the second in a series of four advanced geostationary weather satellites and will significantly improve the detection and observation of environmental phenomena that directly affect public safety. GOES-S is slated to launch March 1, 2018.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is being prepared to launch the Geostationary Operational Environmental Satellite, or GOES-S. It will be the second in a series of four advanced geostationary weather satellites and will significantly improve the detection and observation of environmental phenomena that directly affect public safety. GOES-S is slated to launch March 1, 2018.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is being prepared to launch the Geostationary Operational Environmental Satellite, or GOES-S. It will be the second in a series of four advanced geostationary weather satellites and will significantly improve the detection and observation of environmental phenomena that directly affect public safety. GOES-S is slated to launch March 1, 2018.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket will be positioned on its launcher to boost the Geostationary Operational Environmental Satellite, or GOES-S. It will be the second in a series of four advanced geostationary weather satellites and will significantly improve the detection and observation of environmental phenomena that directly affect public safety. GOES-S is slated to launch March 1, 2018.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket will be positioned on its launcher to boost the Geostationary Operational Environmental Satellite, or GOES-S. It will be the second in a series of four advanced geostationary weather satellites and will significantly improve the detection and observation of environmental phenomena that directly affect public safety. GOES-S is slated to launch March 1, 2018.

The 2017 class of astronaut candidates are at United Launch Alliance's Space Launch Complex 41 at Cape Canaveral Air Force Station (CCAFS) in Florida for a familiarization tour. They also toured facilities at Kennedy Space Center, including the Neil Armstrong Operations and Checkout Building high bay; the Launch Control Center, Launch Complex 39B, the Vehicle Assembly Building, Boeing's Commercial Crew and Cargo Facility, and SpaceX's Launch Complex 39A. The candidates will spend about two years getting to know the space station systems and learning how to spacewalk, speak Russian, control the International Space Station's robotic arm and fly T-38s, before they're eligible to be assigned to a mission.

STS-41 Discovery, Orbiter Vehicle (OV) 103, lifts off from the Kennedy Space Center (KSC) Launch Complex (LC) Pad 39 mobile launcher platform at 7:47 am (Eastern Daylight Time (EDT)). OV-103 riding atop the external tank (ET) and flanked by two solid rocket boosters (SRBs), is captured just moments after liftoff. Not yet clear of the fixed service structure (FSS) tower, OV-103 is highlighted against the cloudless morning sky. Exhaust smoke billows from the SRBs and the space shuttle main engines (SSMEs) creating a cloud over the launch pad area.

The 2017 class of astronaut candidates pose for a group photograph at United Launch Alliance's Space Launch Complex 41 at Cape Canaveral Air Force Station (CCAFS) in Florida during a familiarization tour. They also toured Kennedy Space Center facilities, including the Neil Armstrong Operations and Checkout Building high bay; the Launch Control Center, Launch Complex 39B, the Vehicle Assembly Building, Boeing's Commercial Crew and Cargo Facility, and SpaceX's Launch Complex 39A. The candidates will spend about two years getting to know the space station systems and learning how to spacewalk, speak Russian, control the International Space Station's robotic arm and fly T-38s, before they're eligible to be assigned to a mission.

The 2017 class of astronaut candidates are at United Launch Alliance's Space Launch Complex 41 at Cape Canaveral Air Force Station (CCAFS) in Florida for a familiarization tour. They are on the crew access tower that provides access to the crew access arm. They also toured facilities at Kennedy Space Center, including the Neil Armstrong Operations and Checkout Building high bay; the Launch Control Center, Launch Complex 39B, the Vehicle Assembly Building, Boeing's Commercial Crew and Cargo Facility, and SpaceX's Launch Complex 39A. The candidates will spend about two years getting to know the space station systems and learning how to spacewalk, speak Russian, control the International Space Station's robotic arm and fly T-38s, before they're eligible to be assigned to a mission.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, backs up toward Complex 41 at Cape Canaveral Air Force Station in Florida. The arm will be installed on the Complex 41 Crew Access Tower. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, backs up toward Complex 41 at Cape Canaveral Air Force Station in Florida. The arm will be installed on the Complex 41 Crew Access Tower. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, travels along the road toward Complex 41 at Cape Canaveral Air Force Station in Florida. The arm will be installed on the Complex 41 Crew Access Tower. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, arrives at Complex 41 at Cape Canaveral Air Force Station in Florida. The arm will be installed on the Complex 41 Crew Access Tower. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, travels along the road toward Complex 41 at Cape Canaveral Air Force Station in Florida. The arm will be installed on the Complex 41 Crew Access Tower. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A United Launch Alliance Atlas V rocket is rolled to Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket stands at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket arrives at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket arrives at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket is rolled to Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket stands at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket is rolled to Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Centaur upper stage has been mated to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V first stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, United Launch Alliance team members mate a Centaur upper stage to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V Centaur upper stage leaves the Delta Operations Center aboard a transport trailer for delivery to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V Centaur upper stage arrives at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

Viewed overhead from the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Atlas V first stage arrives for the Tracking and Data Relay Satellite, TDRS-M, mission. The rocket is scheduled to launch the latest TDRS satellite as part of the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, United Launch Alliance team members monitor the progress as a Centaur upper stage is positioned prior to mating to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V Centaur upper stage is on its wat to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V Centaur upper stage is prepared to leave the Delta Operations Center aboard a transport trailer for delivery to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, United Launch Alliance team members monitor progress as a Centaur upper stage is positioned prior to mating to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

The United Launch Alliance Atlas V first stage has been positioned inside the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

The United Launch Alliance Atlas V first stage has been positioned inside the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Centaur upper stage is positioned prior to mating to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V Centaur upper stage leaves the Delta Operations Center aboard a transport trailer for delivery to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

The United Launch Alliance Atlas V first stage has been positioned inside the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V Centaur upper stage is on its wat to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

At the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Centaur upper stage has been mated to an Atlas V booster. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V Centaur upper stage is on its wat to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to help launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

United Launch Alliance team members assist as the operation begins to lift the Centaur upper stage for mating to the Atlas V booster at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

A United Launch Alliance Atlas V first stage is lifted at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, departs from Oak Hill, Florida, and heads to NASA’s Kennedy Space Center in Florida. The arm will be installed on the Complex 41 Crew Access Tower at Cape Canaveral Air Force Station. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, crosses the Haulover Canal Bridge on its way to the entrance of NASA’s Kennedy Space Center in Florida. The arm will be installed on the Complex 41 Crew Access Tower at Cape Canaveral Air Force Station. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, departs from Oak Hill, Florida, and heads to NASA’s Kennedy Space Center in Florida. The arm will be installed on the Complex 41 Crew Access Tower at Cape Canaveral Air Force Station. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, passes through the entrance to NASA’s Kennedy Space Center in Florida. The arm will be installed on the Complex 41 Crew Access Tower at Cape Canaveral Air Force Station. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

A heavy-lift transport truck, carrying the Crew Access Arm for Space Launch Complex 41, departs from Oak Hill, Florida, and heads to NASA’s Kennedy Space Center in Florida. The arm will be installed on the Complex 41 Crew Access Tower at Cape Canaveral Air Force Station. It will be used as a bridge by astronauts to board Boeing's CST-100 Starliner spacecraft as it stands on the launch pad atop a United Launch Alliance Atlas V rocket.

In the Vertical Integration Facility at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Atlas V rocket is ready to be rolled to Space Launch Complex 41. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

A United Launch Alliance Atlas V rocket rolls out of the Vertical Integration Facility at Cape Canaveral Air Force Station in Florida on its way to Space Launch Complex 41. The launch vehicle will send NASA's Tracking and Data Relay Satellite, TDRS-M to orbit. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop a United Launch Alliance Atlas V rocket is scheduled to take place from Space Launch Complex 41 at Cape Canaveral Air Force Station at 8:03 a.m. EDT Aug. 18.

United Launch Alliance team members monitor the progress as the operation begins to lift the Centaur upper stage for mating to its Atlas V booster in the vertical position at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

United Launch Alliance team members monitor the progress as the operation begins to lift the Atlas V first stage to the vertical position at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

United Launch Alliance team members monitor the progress as the operation begins to lift the Atlas V first stage to the vertical position at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V first stage leaves the Atlas Space Operations Center aboard a transport trailer for delivery to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

A United Launch Alliance Atlas V first stage is prepared to leave the Atlas Space Operations Center aboard a transport trailer for delivery to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 3, 2017 at 9:02 a.m. EDT.

United Launch Alliance team members monitor the progress as the operation begins to lift the Centaur upper stage for mating to its Atlas V booster in the vertical position at the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The rocket is scheduled to launch the Tracking and Data Relay Satellite, TDRS-M. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 in early August.

The Titan/Centaur-6 launch vehicle was moved to Launch Complex 41 at Kennedy Space Center in Florida to complete checkout procedures in preparation for launch. The photo is dated January 1977. This launch vehicle carried Voyager 1 into space on September 5, 1977. https://photojournal.jpl.nasa.gov/catalog/PIA21739

Enclosed in its payload fairing, NASA's Tracking and Data Relay Satellite (TDRS-M) passes the Vehicle assembly Building at the agency's Kennedy Space Center in Florida on its way to the Vertical Integration Facility at Space Launch Complex 41 at Cape Canaveral Air Force Station. TDRS-M will be stacked atop the United Launch Alliance Atlas V Centaur upper stage. It will be the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories. Liftoff atop the ULA Atlas V rocket is scheduled to take place from Cape Canaveral's Space Launch Complex 41 on Aug. 18, 2017.

NASA astronaut Eric Boe, one of four astronauts working with the agency’s Commercial Crew Program, had the opportunity to check out the Crew Access Tower at Space Launch Complex 41 (SLC-41) Wednesday with a United Launch Alliance Atlas V on the pad. Boe, along with launch operations engineers from NASA, Boeing, and ULA, climbed the launch pad tower to evaluate lighting and spotlights after dark. The survey helped ensure crew members will have acceptable visibility as they prepare to launch aboard Boeing’s Starliner spacecraft on the Crew Flight Test to the International Space Station targeted for later this year.

On July 29, 2021, Boeing’s CST-100 Starliner spacecraft and the United Launch Alliance Atlas V rocket rolled out of the Vertical Integration Facility to the launch pad at Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida. Starliner will launch on the Atlas V for Boeing’s second uncrewed Orbital Flight Test (OFT-2) for NASA’s Commercial Crew Program.; OFT-2 is an important uncrewed mission designed to test the end-to-end capabilities of the new system for NASA’s Commercial Crew Program.

On July 29, 2021, Boeing’s CST-100 Starliner spacecraft and the United Launch Alliance Atlas V rocket rolled out of the Vertical Integration Facility to the launch pad at Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida. Starliner will launch on the Atlas V for Boeing’s second uncrewed Orbital Flight Test (OFT-2) for NASA’s Commercial Crew Program. OFT-2 is an important uncrewed mission designed to test the end-to-end capabilities of the new system for NASA’s Commercial Crew Program.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

Boeing’s Starliner spacecraft atop the United Launch Alliance Atlas V rocket is seen on the launch pad of Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida on Saturday, May 4, 2024, ahead of NASA’s Boeing Crew Flight Test. As part of the agency’s Commercial Crew Program, NASA astronauts Butch Wilmore and Suni Williams are the first to launch to the International Space Station aboard Boeing’s Starliner spacecraft. Liftoff is scheduled for 10:34 p.m. ET Monday, May 6.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.

A United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, with NASA's Tracking and Data Relay Satellite, TDRS-M. TDRS-M. Liftoff was at 8:29 a.m. EDT. TDRS-M is the latest spacecraft destined for the agency's constellation of communications satellites that allows nearly continuous contact with orbiting spacecraft ranging from the International Space Station and Hubble Space Telescope to the array of scientific observatories.