Mercury’s Caloris Basin in enhanced colors, showing different materials on the surface. The Caloris Basin is a huge impact site at the equator that created a wave that made it a mountain ridge 180 degrees on the other side.
Today in As part of mission the crew of Space Shuttle Discovery returned the Hubble Space Telescope to service after three spacewalks to repair its gyroscopes. Pictured here are astronauts Steven Smith and John Grunsfeld on one of the spacewalks.
This image from the NASA/ESA Hubble Space Telescope reveals a galaxy cluster, known as MACS Each of the bright spots seen here is a galaxy, and each is home to many millions, or even billions, of stars. [Read the Full Story Behind This Photo
Spiral Galaxy ESO — A thin, glittering streak across the sky, with all its contents neatly aligned on a common plane. Many galaxies stuctured as such, but why is this important?gov/content/hubble-eyes-galaxy-as-flat-as-a-pancake