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Protecting Earth's environment and other solar system bodies from harmful contamination has been an important principle throughout the history of space explorat

Under U.S. policy and international treaty, the goals of planetary protection are to avoid both adverse changes in Earth’s environment caused by introduc

Three recent developments have greatly increased interest in the search for life on Mars. The first is new information about the Martian environment including e

NASA maintains a planetary protection policy to avoid the forward biological contamination of other worlds by terrestrial organisms, and back biological contami

Are we alone in the universe? How did life arise on our planet? How do we search for life beyond Earth? These profound questions excite and intrigue broad cross