Looking for Glass
Orbiting instruments spotted glass (green) in the Alga Crater on Mars's southern hemisphere. The glass formed in the extreme heat of a violent impact, and researchers hope to one day search for evidence of ancient life within.
Feed your need for "heavenly" views of the universe every Friday with our picks of the most awe-inspiring space pictures. This week, the Canary Islands stir up trouble in the clouds and researchers spy some glass on Mars.