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A Call From Outer Space, or a Cosmic Wrong Number?

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Allen Telescope Array

Radio antennas at the Allen Telescope Array in California. Astronomers at the SETI Institute used the antennas to look for a mysterious radio signal reported by Russian scientists but could not find it.

Credit: Ramin Rahimian for The New York Times

It's probably just a piece of cosmic spam, the astrophysical equivalent of butt dialing. But nobody really knows for sure.

From The New York Times
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