Hubble Space Telescope Photo Gallery

Hubble Space Telescope Photo Gallery

This January 2005 image made by the NASA/ESA Hubble Space Telescope shows the Whirlpool Galaxy (M51) and a companion galaxy. The Whirlpool's two curving arms are star-formation factories, compressing hydrogen gas and creating clusters of new stars. The Hubble Space Telescope marks its 25th anniversary. A full decade in the making, Hubble rocketed into orbit on April 24, 1990, aboard space shuttle Discovery. (NASA, ESA, S. Beckwith (STScI), Hubble Heritage Team STS via AP)