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Copernical Team
NASA Researcher's AI 'Eye' could help robotic data-gathering
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Webb telescope promises new age of the stars
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Measuring times in billionths of a billionth of a second
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Mars megatsunami may have been caused by Chicxulub-like asteroid impact
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Chinese scientists complete rice, Arabidopsis life-cycle experiments in space
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Elon Musk's SpaceX unveils Starshield satellite services for U.S. military
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Rocket Lab introduces dedicated national security subsidiary
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Momentus to Fly JINJUSat-1 for CONTEC
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Britain set to launch its first space mission
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Maybe we don't see aliens because they're waiting to hear a signal from us first
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We've had a long-running series here at UT on potential solutions Fermi paradox—why aren't we able to detect any alien life out there in the Universe? But more possible solutions are being developed all the time. Now, another paper adds some additional theory to one of the more popular solutions—that aliens are just too busy to care about us.
The paper, released on arXiv, was written by Amri Wandel of the Racah Institute of Physics at the Hebrew University of Jerusalem. It makes two basic assumptions. First, aliens don't really care about planets with life on them. Second, they would care if they could detect intelligent life on one.
For the first assumption to be valid, it would help if the occurrence of "biotic" (i.e., having biology) planets is widespread. In that case, even advanced civilizations might not have enough resources to devote to fully exploring those planets, especially in the form of an actual probe.