It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Some research has suggested the potential dwarf planet is also littered with pellets of methane as much as half an inch across. Today, Triton isn’t a dwarf planet and it isn’t in the Kuiper Belt.

Triton, the largest moon of Neptune, is likely a captured plutoid, and it is even possible that the odd tilt of Uranus on its axis is due to a collision with a plutoid. Similarly to dwarf planets ...

Dwarf planets do not fit into either category ... a planet once it no longer orbits its parent star? Neptune's moon Triton has features very similar to those of Pluto and Eris; some astronomers ...

In this case, Triton would have once been a dwarf planet. However, it had a close encounter with Neptune that ended with the loss of the other body, making the former planet a moon. Sadly ...

Astronomers have long been intrigued by the makeup of the asteroid belt’s largest body. When it was first spotted in 1801, ...

The newly discovered object, named 2017 OF201, has a 25,000-year orbit and is believed to be a large contender for dwarf ...

Dwarf planets are defined by having enough mass ... "Farther in the future, it would be great to send spacecraft back to Pluto and Triton, and also to as-yet unexplored Eris, Makemake, and others ...

Neptune’s largest moon, Triton, and the dwarf planet Pluto may have shared a common origin before being separated in the early solar system, an analysis of their composition suggests.

In fact, Ceres makes up 25% of the total mass of the asteroid belt. Still, Ceres remains a dwarf planet. Perhaps as it should, given Pluto's relegation to dwarf planet — Pluto is 14 times larger ...