CAPE CANAVERAL, Fla. -- A cloud of exhaust and smoke billows past a lightning mast on Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida as a United Launch Alliance Atlas V 401 rocket lifts off at 8:48 p.m. EST, carrying NASA's Tracking and Data Relay Satellite-K, TDRS-K, to orbit. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- The umbilical tower drops back from a United Launch Alliance Atlas V 401 rocket as it lifts off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida. Launch, with NASA's Tracking and Data Relay Satellite-K or TDRS-K aboard, was at 8:48 p.m. EST. he TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- The United Launch Alliance Atlas V 401 rocket carrying NASA's Tracking and Data Relay Satellite-K, TDRS-K, roars to life on Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 8:48 p.m. EST. he TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A rumble is heard across the Space Coast as a United Launch Alliance Atlas V 401 rocket roars off Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida at 8:48 p.m. EST, carrying NASA's Tracking and Data Relay Satellite-K, TDRS-K, to orbit. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- The engines ignite under the United Launch Alliance Atlas V 401 rocket at Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida. NASA's Tracking and Data Relay Satellite-K, TDRS-K, began its journey to orbit at 8:48 p.m. EST. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- The engines ignite under the United Launch Alliance Atlas V 401 rocket at Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida. NASA's Tracking and Data Relay Satellite-K, TDRS-K, began its journey to orbit at 8:48 p.m. EST. he TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A brilliant flash signals engine ignition under the United Launch Alliance Atlas V 401 rocket at Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida. NASA's Tracking and Data Relay Satellite-K, TDRS-K, began its journey to orbit at 8:48 p.m. EST. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A Space Exploration Technologies, or SpaceX, Falcon 9 rocket lifts off Space Launch Complex 40 on Cape Canaveral Air Force Station in Florida at 10:10 a.m. EST, carrying a Dragon capsule filled with cargo. The SpaceX Dragon capsule is making its third trip to the International Space Station, following a demonstration flight in May 2012 and the first resupply mission in October 2012. The SpaceX-2 mission is the second of 12 SpaceX flights contracted by NASA to resupply the orbiting laboratory. For more information, visit http:__www.nasa.gov_mission_pages_station_structure_launch_spacex2-feature.html Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A United Launch Alliance Atlas V 401 rocket races above the lightning masts on Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida, leaving plumes of exhaust and smoke in its wake. Its payload, NASA's Tracking and Data Relay Satellite-K or TDRS-K, began its climb to orbit at 8:48 p.m. EST. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray

CAPE CANAVERAL, Fla. -- A cloud of exhaust and smoke forms under a United Launch Alliance Atlas V 401 rocket on Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida as it lifts off at 8:48 p.m. EST, carrying NASA's Tracking and Data Relay Satellite-K, TDRS-K, to orbit. The TDRS-K spacecraft is part of the next-generation series in the Tracking and Data Relay Satellite System, a constellation of space-based communication satellites providing tracking, telemetry, command and high-bandwidth data return services. For more information, visit http:__www.nasa.gov_mission_pages_tdrs_index.html. Photo credit: NASA_Tony Gray and Robert Murray