The Mars Global Surveyor is one engineering project that keeps going and going. The spacecraft launched in 1997 and lost communications with NASA about a month ago, but keeps sending back gems.
The latest: There has been water flowing on Mars in the last seven years.
NASA photographs have revealed bright new deposits seen in two gullies on Mars that suggest water carried sediment through them sometime during the past seven years. "These observations give the strongest evidence to date that water still flows occasionally on the surface of Mars," said Michael Meyer, lead scientist for NASA's Mars Exploration Program, Washington.