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.

Astronomers using the James Webb Space Telescope (JWST) have taken a fresh look at the distant edges of our solar system — ...

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.

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

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 ...

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

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be fair—but one of the largest yet discovered and with an orbit around the Sun that ...

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the ...

As a result of the International Astronomical Union’s 2006 demotion of Pluto from planet to dwarf planet, our solar system ...

In the study titled, Evidence of haze control of Pluto's atmospheric heat balance from JWST/MIRI thermal light curves, astronomers revealed that they detected and measured the thermal emission of ...

The first observations of Pluto by NASA's James Webb Space Telescope (JWST) reveal dramatic phenomena on its surface, like ...