Galaxies

Galactic collisions replicated in the lab help researchers investigate the origins of vastly amplified magnetic fields in the universe

A bright galaxy may hold starts from a generation that seeded the rest of the universe

NASA’s former director of astrophysics plans to revolutionize space science with agile, privately funded missions

The universe’s hidden stuff could be a mirror world of invisible particles and “dark atoms”

The ALMA telescope array glimpses a far-distant galaxy through an Einstein ring

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

This never-before-seen phenomenon could help explain what comprises dark matter

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

Explosive geysers of material that shoot away from black holes at nearly the speed of light seem to form more often in galaxies that are the product of two galaxies merging together

The Thirty Meter Telescope can revolutionize astronomy and become a part of the holy mountain’s rich cultural heritage

The embattled Thirty Meter Telescope project can proceed on Mauna Kea, but only by cutting back astronomy elsewhere on the mountain

Astronomers use Kepler telescope to study weather on Jupiter-size planets beyond our solar system