Initial observations have allowed scientists to conclude that it could be tied to a dark-toned rocky layer that the Mars Reconnaissance Orbiter spotted from above. "Placing these features in ...

An artist’s conception shows Portal’s Supernova satellite bus in orbit, using a propulsion system that focuses sunlight on a heat exchanger to produce thrust. (Portal Space Systems ...

Initial observations have allowed scientists to conclude that it could be tied to a dark-toned rocky layer that the Mars Reconnaissance Orbiter spotted from above. "Placing these features in geologic ...