Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Combining with one other previously confirmed planet, one of our closest stellar neighbors now has a family of four.

A dramatic cosmic event is winding up to occur right in our backyard. Astronomers have spotted a pair of stars bound for ...

The star is located in our Milky Way galaxy about 12,000 light-years from Earth in the direction of the constellation Aquila.

This colorful image of the Helix nebula may mirror what someday could become of our sun and our home planet. Released on ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Starting closest to the sun, our home star's nearest ... there could be "more than 100" extra dwarf planets waiting to be found in the outer solar system, all of which could have moons.

Planets' temperatures are largely influenced by their structural characteristics and proximity to the Sun, however, Venus ...