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

The science community may be ecstatic over the discovery of a ninth planet, but the former planet "Pluto" had a totally different reaction. Hours after scientists announced there's solid evidence of ...

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

European astronomers report the discovery of a second alien world in the TOI-1422 planetary system located some 500 light ...

Astronomers have discovered a brand-new world hiding out beyond Pluto. While exciting, the discovery of this new world could challenge long-standing theories of the existence of Planet Nine. In fact, ...

Anchor Brian Webb and executive producer Trenton Hooker are joined by University of Arizona Professor Laird Close, who talks about his team's discovery of a new planet. Also, Donald Schmitt, a ...

Deep within Earth’s mantle, scientists have uncovered surprising evidence that traces of the planet’s early form,proto-Earth, ...

Image of a dusty disk around a young star. Among the multiple concentric rings we see a small dot of light (indicated by a white circle). This is an image of a new-born planet, likely a gas giant ...

It's been one Neptunian year—or about 165 Earth years—since astronomers first observed the most distant planet from the sun.

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...