Astronomers have discovered a large trans-Neptunian object, 2017 OF201, at the edge of the solar system. Its strange orbit challenges the Planet Nine theory and shows the space beyond Neptune is not ...

After the sun goes out, what will happen to the solar system — and how long will it last?

The dwarf planet Ceres, tucked away in the asteroid belt between Mars and Jupiter, has long been considered a quiet, frozen ...

Called 3I/ATLAS, the object is only the third of its kind known to astronomers, and it’s likely been heading our way for ...

A model of a solar system first and foremost with a small projector built in, the Science Can Solar System Planetary Projector is a great educational tool for kids.

For the first time, astronomers spot the beginning of a solar system The discovery is like finding a solar system's 'baby picture.' Laura Baisas Published Jul 16, 2025 11:00 AM EDT ...

NASA’s Hubble Space Telescope has snapped images of a recently discovered interstellar visitor hurtling through our solar system. Traveling at 130,000 mph, 3I/ATLAS is the fastest comet ever ...

A possible cousin of Pluto seems to be circling the far reaches of the solar system. The dwarf planet candidate 2017 OF201 travels in a superwide orbit, with the sun relatively near one end of its ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new simulations show.