“The Ultimate Alien Detector” –LISA Gravitational-Wave Observatory

White Dwarf Star System

 

LISA, the European Space Agency’s planned Laser Interferometer Space Antenna, scheduled for launch in 2034. will comprise three spacecraft, arranged in a triangular formation, 2.5 million kilometers apart designed to function as an enormous, orbiting gravitational wave detector. With only a minor technological tweak LISA, could also function as a detector for signals broadcast by advanced extraterrestrial civilizations, according to Marek Abramowicz of Sweden’s University of Gothenburg.

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“The Messenger” –‘Unambiguously Artificial Gravitational-Wave Signals’

Alien Technology

 

It is conceivable that a civilization advanced enough to see itself in a cosmological context would think of a way to make itself known to the universe. In “The Messenger: A Galactic Center Gravitational-Wave Beacon”pre-print on Arxix, an international team of researchers have proposed a hypothetical alien craft, a beacon at the Milky Way’s Galactic Center, “The Messenger”, that emits gravitational waves that are “unambiguously artificial”.

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