One Astronomer's Noise

Hardly in the news are Spirit and Opportunity, the two Mars rovers what landed in 2004 for a 90-day mission, and they are still going! Mission planners have taken on such challenging tasks as driving into a crater, or driving with a busted wheel with the rovers to extend the scientific usefulness of this mission. The rovers have already found good evidence for water in the “red planet’s” past, and planetary scientists eagerly await more findings from this amazing mission.

http://dsc.discovery.com/news/2007/10/17/mars-rovers-space.html?category=space&guid=20071017100000&dcitc=w19-506-ak-0008