A dense metallic core, a silicate mantle, and a thin atmosphere on top—this familiar internal structure of rocky planets may ...

Neptune from Voyager 2 spacecraft, c1980s. The Voyager 2 space probe was launched by NASA in August 1977. The purpose of the Voyager programme was to study the outer Solar System. Artist NASA. (Photo ...

A strange dark spot on Neptune has been observed from Earth for the first time, offering fresh clues into how these marks form. In 1989, NASA’s Voyager 2 space probe detected a shadowy region on ...

The object, known as 2002 XV93, is a minor planet and a Trans Neptunian Object (TNO).

Of all the potential super-Earths—terrestrial exoplanets more massive than Earth—out there, an exoplanet orbiting a star only 40 light-years away from us in the constellation Cetus might be the most ...

Nereid was discovered by Dutch astronomer Gerard Kuiper, who named the moon after the sea nymphs in Greek mythology ...

Using data from the Webb space telescope, a team of researchers is suggesting that Neptune’s moon Nereid is the only survivor ...

Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have spotted a large and ...

It’s almost impossible to believe, but this image of Neptune was not taken by a spacecraft near the giant planet. It was instead taken by a telescope right here on Earth. The rest of this article is ...

Using ESO's Very Large Telescope (VLT), astronomers have observed a large dark spot in Neptune's atmosphere, with an unexpected smaller bright spot adjacent to it. This is the first time a dark spot ...

This image shows Neptune observed with the MUSE instrument at ESO’s Very Large Telescope (VLT). At each pixel within Neptune Using ESO’s Very Large Telescope (VLT), astronomers have observed a large ...