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An Overview of the Mars Exploration Rover (MER) Mission - Windows to the Universe

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About the Mars Exploration Rover (MER) Mission

NASA's Mars Exploration Rover (MER) mission has sent two robot rovers to Mars. The two robots landed at different places on Mars. The places are called Gusev Crater and Meridiani Planum. Scientists think there might have been water at each of the places in the past. Places that had water are the best places to look for signs of life. The rovers have special instruments to look for signs of water.

The two MER spacecraft blasted off in June and July of 2003. They got to Mars in January 2004. The two rovers have been given names. The first is named "Spirit" and the second is called "Opportunity".

Last modified February 7, 2004 by Randy Russell.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF