OF201, the object belongs to the same all-star family as Pluto: dwarf planets. Its diameter, roughly 435 miles (700 km), is ...

Researchers believe that 2017 OF201’s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new ...

New James Webb Space Telescope data reveal Pluto's high-altitude haze is a key driver of the climate on the dwarf planet, ...

New data captured by the James Webb Space Telescope has finally given astronomers new clues about how Pluto cools itself.

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

According to the new proposed definition ... but other objects – including dwarf planets like Pluto, and asteroids – are not,” said Jean-Luc Margot, lead author of the study.

That coagulation creates larger "grains" of dust, "a bit like ... geology of Pluto also tells us about the early solar system. The surface of the planet was documented by NASA’s New Horizons ...

It would eventually be named Pluto after the Roman god of the underworld. Despite being smaller than several known moons, it was deemed large enough to be considered a planet. You may like New ...