Science
Transfer of Life Between Earth and Venus with Planet-Grazing Asteroids – Astrobiology News
Recently, phosphine was discovered in the atmosphere of Venus as a potential biosignature.
This raises the question: if Venusian life exists, could it be related to terrestrial life? Based on the known rate of meteoroid impacts on Earth, we show that at least 6×105 asteroids have grazed Earth’s atmosphere without being significantly heated and later impacted Venus, and a similar number have grazed Venus’s atmosphere and later impacted the Earth, both within a period of 105 years during which m…
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