Showing posts with label Institute for Astrophysics. Show all posts
Showing posts with label Institute for Astrophysics. Show all posts

Thursday, March 03, 2016

Seeking the Aliens Who Seek Us

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Seeking the Aliens Who Seek Us
This diagram shows the transit zone our planet will sweep through when it passes in front of the sun; any intelligent extraterrestrials looking at our sun living in a star system that falls within this zone will detect us.

     What if an advanced alien civilization saw our planet across the interstellar expanse and switched on their powerful radio transmitters to send a “hello neighbor!” message... but all of our radio antennae were staring at KIC 8462852 when we really should be paying attention to Omicron Persei.
Ian O'Neill
news.discovery.com
3-1-16

Space is big and there’s billions of stars in our galaxy where hypothetical transmitting extraterrestrials could be orbiting; we may be missing out on a flood of alien phone calls every day just because we can’t monitor them all.

ANALYSIS: Kepler’s ‘Bizarre’ Signal Sparks Alien Intelligence Speculation

Enter René Heller and Ralph Pudritz of the Max Planck Institute for Solar System Research in Göttingen, Germany, and McMaster University in Canada, respectively, who pondered this very question and arrived at a wonderfully elegant solution. Granted, their strategy, which has been published in the journal Astrobiology, doesn’t tell us exactly where intelligent aliens are holed up, but it may better the odds of us tapping into the galactic switchboard. [...]

Tuesday, March 01, 2016

New Trick for Finding Alien Civilizations

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New Trick for Finding Alien Civilizations

     The hunt for extraterrestrial life — of any kind, including lowly, long-dead microbes — is lofty enough. But the hunt for intelligent civilizations that could be looking for us in return? It's even more of a long shot. In a new paper published in the journal Astrobiology, researchers present one possible strategy for finding these theoretical beings: Assume that they're searching for us in exactly the same way we're searching for them.
Rachel Feltman
The Washington Post
3-1-16

[...]

"It's impossible to predict whether extraterrestrials use the same observational techniques as we do," study co-author René Heller of the Institute for Astrophysics in Göttingen, Germany, said in a statement. "But they will have to deal with the same physical principles as we do, and Earth's solar transits are an obvious method to detect us."

In theory, we may be able to catch a planet that had already sent us some kind of message long, long ago. And once we knew what direction to listen in, we'd stand a better chance of capturing it. [...]