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Extraterrestrial Life Discovered by 2050

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Question

Despite our best efforts, Earth is still the only known planet in the universe to harbor any kind of life. Though plenty of our attention in this hunt has been focused on studying potentially habitable exoplanets, this question is concerned with the likelihood of finding extraterrestrial life in our own cosmic backyard.

Will any conclusive evidence for extraterrestrial life, past or present, be discovered within our Solar System by 2050?

This question will resolve as Yes if, at any point between January 1, 2020 to January 1, 2050, a scientific consensus is reached that life exists or has existed anywhere in our Solar System besides Earth, as judged by Metaculus Admins.

For this question, we exclude any extra-terrestrial life which has been placed outside Earth through intentional or unintentional human activity. Otherwise, it is not necessary for ET life to have a separate origin from Earth life (see the panspermia hypothesis).

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