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

The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in ...

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 ...

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

Cheng added. This discovery provides renewed impetus for studying the Pluto-like planet category and the solar system's unexplored boundaries. It may also guide future missions akin to NASA’s New ...

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.

New research shows there is at least a 40% chance of the existence of Planet Nine, but scientists are still looking for ...

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

A new dwarf planet, temporarily named 2017 OF201, has been located in a distant orbit far beyond Pluto. The object, which may be a distant cousin of Pluto, has an orbital path so vast that it ...

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 ...

Scientists have identified a new minor planet beyond Pluto, enhancing our knowledge of the solar system's outer boundaries ... (approximately 290 to 510 miles), placing it amongst known dwarf planets ...