NASA has a rover, called Curiosity, on Mars and you can send a postcard! Follow this link and pick one of 9 different postcard images then add a message and send. The postcard will be sent to the Curiosity Rover, Gale Crater on Mars!
http://mars.nasa.gov/ is full of interesting facts, videos, activities and photos about the Mars Exploration Program. Curiosity, the rover, is part of this program which is trying to determine if the planet Mars was ever able to support any life. What do you think?
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