Scientists continue to disagree over how worlds in the solar system should be classified. The argument turns on whether ...

Those who supported Pluto’s demotion included Neil DeGrasse Tyson ...

Hubble spots white dwarf star 'snacking' on chunk of Pluto-like object. The NASA/ESA Hubble Space Telescope has spotted a ...

The spacecraft is currently approaching the outer boundary of the solar system as it prepares to cross into interstellar space.

The discovery of the Kuiper Belt revealed thousands of icy objects near Pluto, challenging its status as a planet. After the ...

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

Pluto lost its planethood for a very specific reason. Whether or not that’s a good reason depends on who you ask.

Since it was stripped of planetary status, Pluto’s defenders have been fighting the decision – and they’re only getting more passionate ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Pluto landed its largest moon, Charon, with a 'kiss'—overturning ...

The names Nix and Hydra have been approved for the two small satellites of Pluto discovered in May 2005. The International Astronomical Union (IAU), the internationally recognized authority for ...

Pluto's demoted status as a dwarf planet turns 20 years old today and isn't even a chink in its armour when it comes to its ...

NASA has released the most detailed and dramatic images ever taken of the distant dwarf planet Pluto. The images from NASA’s Hubble Space Telescope show an icy, mottled, dark molasses-colored world ...