Mars Rock Supports Cross-Seeding Theory

914 writes "Mars rover Opportunity has found a rock (nicknamed 'Bounce') that "provides conclusive evidence not only of Martian meteorites on Earth, but also of the possibility of cross-seeding." Not only that, but according to the UPI article: 'The discovery of Bounce raises the distinct possibility that life arising from a common source could have existed for a time on both worlds.'"