Participate

Send a Postcard ›

Write a message to the Opportunity rover and team.

Classroom Activities ›

Access to various classroom activities.

Ask Questions About Mars ›

Ask NASA Mars questions and get facts. Information about Mars missions, rovers, orbiters, landers, astronauts and human exploration.

Mars Facts ›

Mars planet facts and information. Compare Earth & Mars. Fun science images for kids, school, family & space fans. Mars in space, night sky & history.