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Arecibo Observatory: Watching for asteroids, waiting for E.T.

November 25, 2020
Arecibo Observatory: Watching for asteroids, waiting for E.T.
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Arecibo Observatory has been used to send a SETI message as well as for scanning the skies for approaching asteroids.



November 26, 2020 at 01:48AM
via Space.com read more...

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