Astronomers have discovered planets so massive they challenge everything we thought we knew about planetary formation. From ...

A thick layer of haze around the ultra-low-density planet Kepler-51d likely obscures not only the strange planet's ...

Astronomers have uncovered evidence of a dramatic cosmic crash unfolding around a distant star. While reviewing archived ...

A study led by the University of Oxford has identified a new type of planet beyond our solar system—one that stores large ...

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...

Astronomers have discovered a flattened structure of matter around the Milky Way that explains the unusual motion of nearby ...