
This artist's concept illustrates the two types of spiral galaxies that populate our universe: those with plump middles, or central…

Three SR-71 aircraft were used at different times during the 1990s by NASA as test beds for high-speed and high-altitude…

Three SR-71 aircraft were used at different times during the 1990s by NASA as test beds for high-speed and high-altitude…

Research pilot Rogers E. Smith is shown here in front of the SR-71 Blackbird he flew for NASA.

Pathfinder was a lightweight, solar-powered, remotely piloted flying wing aircraft used to demonstrate the use of solar power for long-duration,…

In front of the M2-F3 are (Left-Right) Air Force pilot Captain Jerauld Gentry and NASA pilots John Manke and William…

APOD Science APOD APOD: 2009 November 13 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss …

With the broad expanse of Rogers Dry Lake and Leuhman Ridge stretching out behind them, NASA's two Global Hawks lined…

NASA's two Global Hawks are shown in their blue-and-white paint scheme lined up together on the ramp at NASA's Dryden…

NASA's two Global Hawks are shown in their blue-and-white paint scheme lined up together on the ramp at NASA's Dryden…