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What could ET know about us?

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Added by miamigo
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The SETI Institute is a non-profit, so we rely on donors to fund our work and outreach--like SETI Live, SETI Talks and other events. This #GivingTuesday we have a special challenge: if 200 people donate, a generous member of our community will gift the SETI Institute $10,000. Come learn about exoplanets and support the SETI Institute! Donate here: https://bit.ly/SETILiveGT

Cornell astronomer Lisa Kaltenegger and a colleague have made a list of more than a thousand nearby star systems whose inhabitants could know a lot about Earth. Anyone in these systems who measures the light output from our Sun would notice that every 365 days it gets slightly dimmer. They would thereby learn that a small planet – our planet – orbits Sol, and, with further study, could discover that there’s life here. We’ll be talking to Lisa about these nearby star systems, and how they might be the key to finding evidence of intelligent life nearby. After all, if they know about us, maybe we could know about them.


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