What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

Earth is about to see three total solar eclipses in just under two years, with each successive path of totality moving west ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Two new lines of research now offer hope and a warning. In a Goldilocks scenario, inner planets are too hot and outer planets ...

Researchers followed a single solar hotspot for 3 months as it unleashed nearly 1,000 flares, revealing insights about our Sun's fury.

A new study led by a Georgia State University astronomy graduate student is a major step forward in the search for stars that ...