NASA probe may have found Martian caves (AFP)

Mars as seen from NASA's Mars Odyssey orbiter. A NASA spacecraft found seven possible cave entrances on Mars, triggering interest in hunting for other caverns that might be hiding life on the Red Planet, the US space agency said Friday(AFP/NASA/File)AFP - A NASA spacecraft found seven possible cave entrances on Mars, triggering interest in hunting for other caverns that might be hiding life on the Red Planet, the US space agency said Friday.