When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

Two zombie exoplanets that rose from the grave to shuffle through the gory remains of their fellow planets may just agree ...

Astronomers using the Vera C. Rubin Telescope discovered a possible new dwarf planet that, if confirmed, could join 5 others ...

Astronomers have solved a 170-year-old planetary mystery in a nearby two-star system, discovering that a mysterious wobble ...

Just in time for Halloween, scientists have announced the discovery of a decidedly spooky green star, the first ever found.

Add Yahoo as a preferred source to see more of our stories on Google. Stargazers who have heard of an amazing planetary alignment coming later in January may be in for a letdown if they look up at the ...

In short, a regular planet has enough gravitational pull to clear out the space around it, whereas dwarf planets do not.

New research indicates that Earth-sized planets can maintain stable orbits in the habitable zone of binary star systems like 70 Ophiuchi, located only 16 light-years from Earth.

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

Some exoplanets absorb almost every ray of visible light that reaches them. Their darkness is revealing unexpected clues about the strange atmospheres surrounding distant worlds.

A new study lets some of the air out of a long-held theory that growing, rocky planets will lose their atmosphere if they ...