Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

A team of 48 astronomers from 14 countries, led by the University of Massachusetts Amherst, has discovered a population of ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

An organic molecule called methanimine was found scattered throughout a dense clump of gas and dust 554 light-years away.

This enormous chain of hundreds of galaxies—a cosmic filament—is twisting through space 400 million light-years away ...

Astronomers have reported one of the longest stellar dimming events ever recorded, with a Sun-like star fading by 97 percent for nearly 200 days. Astronomers believe one of the longest stellar dimming ...