Dr. Hoover has discovered evidence of microfossils similar to Cyanobacteria in freshly fractured slices of the interior surfaces of the Alais, Ivuna, and Orgueil CI1 carbonaceous meteorites. The scientist's conclusion is that the fossilized bacteria are not Earthly contaminants but are the fossilized remains of living organisms which lived in the parent bodies of these meteors, e.g. comets, moons, and other astral bodies. The implications are that life is everywhere, and that life on Earth may have come from other planets.
Hitch a ride on a meteorite. New evidence that bacteria could survive a trip between planets.
Interesting hypothesis that Europa's seas are swimming with bacteria. Preliminary results show that all three species, the ordinary gut bacteria Escherichia coli, and extremophiles Deinococcus radiodurans and Sulfolobus shibatae, are just as good at explaining Europa's IR spectrum as the [magnesium sulphate] salts.
Germs from Jupiter? Viruses from Venus? Nope, just live space-borne bacteria discovered floating around Earth. "Although the bugs from space are similar to bacteria on Earth, the scientists said the living cells found in samples of air from the edge of the planet's atmosphere are too far away to have come from Earth." (via waldo.net)