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Galaxies560 articles archived since 1845

Frenzy-Feeding Black Hole Makes Galaxy Most Luminous

A galaxy 12.5 billion light-years away gives off the light of 300 trillion suns, because its feeding black hole produces enough heat to set the whole galaxy's dust glowing. Lee Billings reports  ...

June 4, 2015 — Lee Billings

How Astronomers Discovered the Universe's Hidden Light

Galaxies in every corner of the universe have been sending out photons, or light particles, since nearly the beginning of time. Astronomers are now beginning to read this extragalactic background light...

May 25, 2015 — Alberto Domínguez, Joel R. Primack and Trudy E. Bell

Space Supervoid Sucks Energy from Light

A vast region of space colder than expected is also largely devoid of galaxies, and the two observations are no coincidence. Clara Moskowitz reports  

May 4, 2015 — Clara Moskowitz
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