Radio telescopes have long scanned quiet patches of sky for a lone, artificial-sounding ping, but a growing body of research is pushing astronomers to look instead at the loudest neighborhoods in the ...

The Dyson sphere is a hypothetical artificial structure proposed by physicist Freeman Dyson in 1960, which would cover a star with a structure and directly harness its energy. However, no matter how ...

Across the observable universe, galaxies advertise themselves in radio waves for familiar reasons-magnetic fields, cosmic rays, and, in those cases where it’s relevant, matter spiraling into a central ...