Eighteen years ago today, the Hubble Telescope was launched into space by the Space Shuttle Discovery. To celebrate its coming of age, NASA has released 59 high-definition breathtaking pictures of galaxies colliding across the universe. Above is ESO 99-4, a weird-shaped galaxy (probably the result of another collision) situated in the Triangulum Australe, around 400-million light years away from earth. [Wired]