The Milky Way was once a textbook example of how a spiral galaxy should form and evolve. Now a wave of new observations and ...

NASA’s Hubble Space Telescope captured asteroids crashing into one another in a nearby planetary system around a star some 25 ...

Astronomers have confirmed the first known triple system in which all three galaxies host actively feeding, radio-bright ...

Researchers initially believed they had identified a dust-covered exoplanet, but this object faded. Shortly after, a new ...

A double explosion, in which a dying star split, then recombined, may be a long-hypothesized but never-before-seen "superkilonova." ...