Astrophysics

Science

How much dust falls on Earth each year? Does it affect our planet’s gravity?

Stars

Silhouettes of early galaxies reveal few seeds for new stars

Science, Stars

Out of an hours-long explosion, a stand-in for the first stars

Galaxies, Science

Brief pulse detected by Arecibo telescope appears to come from far beyond our galaxy

Deep-Sky Objects, Stars

Astronomers bring the third dimension to a doomed star’s outburst

Exotic Objects, Science

A source of the most powerful cosmic rays?

Alien Life, Exoplanets, Milky Way, Planets, Stars

Newfound frozen world orbits in binary star system

Exotic Objects

Athena to study the hot and energetic universe

Galaxies

Clumped galaxies give general relativity its toughest test yet

Exotic Objects

Trio of supermassive black holes shakes space-time

Alien Life, Exoplanets, Planets, Stars

Astronomers map space’s icy wastes

Cosmology, Galaxies

Mysterious X-ray signal intrigues astronomers