LIFE on Earth is unlikely to have come from space, says a new study on viruses. If life is ever found on another planet, however, the findings could help us judge whether it arrived from space or not.
Panspermia is the idea that life was seeded by extraterrestrial microbes in the form of hardy bacterial spores that hitched a ride on a space rock and landed on Earth. Jaana Bamford of the in Finland and her colleagues say the key to testing this theory lies with viruses, which are thought to be tied to key…
