Impacts 'more likely' to have spread life from Earth

The study considers a reverse of the "panspermia" idea that occupies much of meteoritic research - namely, that the precursors to life, or life itself, may have been delivered by an impact on the early Earth. Equally, however, Earth impacts may throw up debris that could be loaded with microbes or small, hardy organisms like water bears - which have already demonstrated the ability to survive the harsh conditions of space. Other simulations have tackled the probability that Earth impacts seeded life in the Solar System, suggesting that Earth debris could even have made it to Saturn's moon Titan.

2011-08-23

 extraterrestrial life panspermia asteroid Mars Saturn Jupiter Titan

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