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 ...

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

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 James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's ...

Astronomers have uncovered a distant celestial body that may be a new dwarf planet, orbiting the Sun from more than twice the distance of Pluto. Found by researchers at the Institute for Advanced ...

Computer simulations show that planets could be flung out of the inner solar system, supporting the possible existence of a ...

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

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

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

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

The new object could also challenge the hypothesis that there's a "Planet X" or "Planet Nine" beyond Pluto, with gravity affecting dwarf planets and other objects in the Kuiper Belt. That's ...