Planned for 2.5yrs, NASA telescope completes 15yrs in space
NASA's Spitzer Space Telescope, initially scheduled for a 2.5-year primary mission, has completed 15 years of space exploration. Spitzer assisted in the discovery of planets, illuminated some of the oldest galaxies in the universe, and revealed a new ring around Saturn. Launched in 2003, Spitzer trails behind the Earth and has been gradually drifting farther away from the planet.