The Sun is at the heart of our Solar System, providing the energy that sustains life on Earth. But have you ever wondered what will happen when it reaches the end of its life? In this video, we ...

The biggest issue, however, is that the outer Solar System just hasn’t been observed for long enough. For example, object 2017 OF201 has an orbital period of about 24,000 years.

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

– Gavriel, age 10, Paducah, Kentucky A cloud of collapsing gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago.

The story begins with a puzzle in the outer solar system. Scientists noticed that small icy bodies called Kuiper Belt Objects, which orbit far beyond Neptune, seem to be clustered together in ...

The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. The object, known as 2017 ...

Diagram showing our solar system (sizes and distances not to scale). (Image credit: NASA/JPL) A tiny meteorite is rewriting what scientists thought they knew about the origins of our solar system.

CAPE CANAVERAL, Fla. — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar ...

For only the third time, astronomers have found something passing through our solar system that came from outside the solar system. This interstellar object, known as 3I/ATLAS, is still pretty far ...

"This process has never been seen before in a protoplanetary disk—or anywhere outside our solar system," says co-author Edwin Bergin, a professor at the University of Michigan, U.S.