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This is a Hubble Space Telescope wallpaper of a vast nebula called NGC 604, which lies in the neighboring spiral galaxy M33, located 2.7 million light-years away in the constellation Triangulum.

A NASA Hubble Space Telescope (HST) wallpaper of the magnificent spiral galaxy NGC 4603, the most distant galaxy in which a special class of pulsating stars called Cepheid variables have been found.

In this stunning picture of the giant galactic nebula NGC 3603, the crisp resolution of NASA’s Hubble Space Telescope captures various stages of the life cycle of stars in one single view.

The Space Shuttle Atlantis blazes through the night sky to begin the STS-86 mission, slated to be the seventh of nine planned dockings of the Space Shuttle with the Russian Space Station Mir. Liftoff on September 25 from Launch Pad 39A was at 10:34 p.m. EDT, within seconds of the preferred time, during a six minute, 45 second launch window.

The April 12 launch at Pad 39A of STS-1, just seconds past 7 a.m., carries astronauts John Young and Robert Crippen into an Earth orbital mission scheduled to last for 54 hours, ending with unpowered landing at Edwards Air Force Base in California.

Astronaut Dale A. Gardner, having just completed the major portion of his second extravehicular activity (EVA) period in three days, holds up a “For Sale” sign refering to the two satellites, Palapa B-2 and Westar 6 that they retrieved from orbit after their Payload Assist Modules (PAM) failed to fire.

This artist’s concept shows a supermassive black hole at the center of a remote galaxy digesting the remnants of a star. NASA’s Galaxy Evolution Explorer had a “ringside” seat for this feeding frenzy, using its ultraviolet eyes to study the process from beginning to end.