A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior. Sunspots, which are temporarily darkened areas on the surface of the sun, are the result of ...

Graphic representation of the relative distances between the nearest stars and the Sun. Barnard’s ... [+] star is the second closest star system to the Sun, and the nearest single star to us.