By studying hot gas glowing in circumgalactic space, astrophysicists have found evidence of enormous magnetic fields that ...

such a Dyson Sphere would necessarily radiate excess heat in the form of a strong infrared glow. Dyson suggested that we could detect excess IR radiation from any such civilizations in our galaxy.

Astronomers have released the most detailed image of the Andromeda galaxy with new clues about its evolutionary history to celebrate the 100th anniversary of Edwin Hubble's discovery that our ...