NASA’s Hubble Space Telescope recently discovered a small moon orbiting an icy dwarf planet in the distant reaches of our solar system. MK 2 is 100 miles in diameter and is at least 13,000 miles from ...

New simulations examine whether the seven planets in the TRAPPIST-1 system could host moons, showing that only small, close-orbiting moons could remain stable over long periods ...

The “demoted” dwarf planet Pluto and its largest moon Charon make an unusual pair, and for decades, scientists have been discussing how the binary system—in which each mutually orbits the other—came ...

Stowaways in a small car-sized asteroid that crashed in northern Sudan in 2008 have revealed what happened to a mysterious dwarf planet that is dusting Earth with a rare type of meteorites. That dwarf ...

Dwarf planet Ceres now appears less like a dead rock and more like a world that may have briefly brimmed with potential for life When you purchase through links on our site, we may earn an affiliate ...

A new formation theory for Pluto's moon Charon could explain why Pluto is geologically active. Illustration incorporates NASA New Horizons terrain imagery. Pluto — demoted to dwarf planets status in ...

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 ...

"The significance of this discovery lies in the fact that it would confirm the existence of internal energy sources that could support biological processes." When you purchase through links on our ...