This article appeared in the June 2021 issue of Discover magazine as "Did Life Come From Space?" For more stories like this, become a subscriber.
Did Life on Earth Come From Outer Space?
Some astronomers hypothesize that asteroids and comets might shuttle biological matter between planets.
May 7, 2021 8:15 PMMar 21, 2023 8:13 PM
The mysterious object ‘Oumuamua passed through our solar system in 2017. Loeb has suggested it could have been sent by extraterrestrials.
(Credit: European Southern Observatory/Kornmesser)
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