When you buy through links on our articles, Future and its syndication partners may earn a commission. Pluto's equator is partially covered in ridge-like ice spires known as "bladed terrain." A new ...

Pluto is no longer a planet. The world’s top group of astronomers, the International Astronomical Union, has stripped Pluto of the status it has held since its discovery 76 years ago. The body decided ...

The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

When NASA released images of Pluto in 2015 taken by the New Horizons spacecraft, many were captivated by the dwarf planet’s heart-shaped feature, now called Tombaugh Regio. And now the mystery of how ...

The origin of the interstellar object 1I/’Oumuamua has defied explanation. We perform calculations of the non-gravitational acceleration that would be experienced by bodies composed of a range of ...

The Hubble Space Telescope may be getting old, but it still has excellent spotting power — witness its discovery of a fourth moon of Pluto, which is between 8 miles and 21 miles in diameter. Says ...

Astronomers using the Hubble Space Telescope have uncovered the remains of a frozen, Pluto-like world being devoured by a distant white dwarf star.

A new SPHERE/VLT image of Hygiea, which could be the Solar System’s smallest dwarf planet yet. ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS) Out in the asteroid belt between Mars and Jupiter, ...

PASADENA, Calif.–To paraphrase a certain young lady from literature, the tenth planet Xena is getting curiouser and curiouser. Data released today by the Space Telescope Science Institute reveals that ...

Scientists tracked the dwarf planet Eris as it passed in front of a star, finding that it's probably about the same size as Pluto. "Whether or not you agree with the IAU's 2006 resolution on the ...

Astronomers have discovered three small, icy worlds orbiting the sun near Pluto, on the outer reaches of the solar system. The three newfound bodies are likely big enough to be rounded by their own ...