Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The discovery of dwarf planet 2017 OF201 hints at a 'population behind it with hundreds of ...

The Kuiper Belt, a region of the solar system past Neptune’s orbit, is likely home to hundreds of thousands — if not millions — of icy objects that vary in shape and size.Over 2,000 trans-Neptunian ...

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.

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

Astronomers have announced the discovery of A11pl3Z, a massive new interstellar object entering our solar system.

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...

Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

A possible dwarf planet, like Pluto, has been observed in our solar system, according to a preprint published in arXiv. The area of space where this planet was found was previously thought empty.

How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in elliptical trajectories, and they are all different in size, composition, ...