When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's ...

Can planets orbiting M dwarf stars become habitable, or does the star’s activity prevent it? This is what a recent study ...

In 1995, a pair of scientists discovered a planet outside our solar system orbiting a solar-type star. Since that ...

Researchers have pinpointed a super-Earth in the habitable zone of a nearby M-dwarf star only 18 light-years away.

A nearby binary star system is bereft of giant planets, but scientists think it may still be a decent place to look for life. Binary star system Eta Cassiopeiae, located just 19 light-years away, ...

Planetary retrograde is an apparent backward motion as seen from Earth, creating the illusion of planets moving in reverse ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

For the first time in years, astronomers are seriously talking about adding a new member to the solar system’s planetary ...

A new study published Nov. 24 in Nature Astronomy sheds light on what could be going on beneath the surface of these worlds ...

If we find technological satellites of Jupiter that we did not send, it would imply that Jupiter is of interest to an ...