The Hubble Space Telescope was placed into orbit on April 25, 1990. Since then, it has taken more than 700,000 photographs of celestial objects and events, according to the Space Telescope Science Institute's Office of Public Outreach. At right is an image of a dying star.
Credit: NASA, ESA, S. Beckwith (STScI), and the Hubble Heritage Team (STScI/AURA)