Carnival of Space 245 is up at Vintage Space
Discovery Space news – Search for Sun’s Sibling Could Find Life’s Cousin Discusses recent work in regards to Panspermia.
“The idea is if a planet has life, like Earth, and if you hit it with an asteroid, it will create debris, some of which will escape into space,” astronomer Mauri Valtonen, of the University of Turku, told SPACE.com. “And if the debris is big enough, like 1 meter across, it can shield life inside from radiation, and that life can survive inside for millions of years until that debris lands somewhere. If it happens to land on a planet with suitable conditions, life can start there.”
Valtonen is describing “panspermia” in its most basic form — life, as bacteria or even just some strands of DNA, hopping from planet to planet after meteorite impacts.
Space.com – Sun’s Sibling Stars Could Host Cousins of Earth Life
Arxiv – Transfer of Life-Bearing Meteorites from Earth to Other Planets
The asteroid that killed the dinosaurs 65 million years ago (10 km in diameter, mass greater than 1 trillion tons) must have ejected billions of tons of life-bearing meteorites into space. Now Kyoto Sangyo University physicists have calculated this could have seeded life in the solar system and even as far as Gliese 581
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