Neptune

WASHINGTON—Astronomers have found three previously unknown moons in our solar system—two additional moons circling Neptune and one around Uranus. The distant tiny moons were spotted using powerful land-based telescopes in ...

Earth-like planet is believed to be in the Kuiper Belt—"a doughnut-shaped ring of icy objects" encircling the Sun, ...

CAPE CANAVERAL, Fla.—Neptune and its rings haven’t looked this good in decades. NASA released new glamour shots of ...

Dramatic changes in temperatures in the planet Neptune's atmosphere over the past two decades could be due to seasonal ...

A tiny moon was recently discovered around Neptune, said a study published Feb. 20 in the journal Nature. ...

Pluto, a celestial oddball, could tell us a lot about the formation of the Solar System. A probe ...