NASA will begin the launch countdown for Space Shuttle Atlantis’ STS-115 mission at 6 p.m. EDT Thursday, Aug. 24, at the T-43 hour point. During this mission, Atlantis’ crew will resume construction ...

NASA will begin the countdown once again for the launch of Space Shuttle Atlantis on mission STS-115 Sept. 3 at 8 a.m. EDT, at the T-43 hour point. During this mission, Atlantis’ crew will resume the ...

NASA’s launch and mission teams, along with the Artemis II crew, completed a key test Dec. 20, a countdown demonstration test, ahead of the Artemis II flight around the Moon early next year.

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. NASA stationed this countdown clock ...