Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

They developed a 3D model that simulates how the solar system's orbital architecture may have evolved differently with the formation of a planet that is at least twice the size of Earth's mass—a ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

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

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

Our Solar System hasn’t always had the arrangement of planets we see today. Past iterations put other planets through the wringer, and some of them got booted — including a long-lost alternate ...

There's something big missing from our solar system — and that may be a good thing. Planetary scientists recently simulated an alternate version of our solar system: one with a super-Earth ...

Through the alternative solar system they created, they discovered that if Jupiter's orbit were to become more eccentric, it would change in the shape of Earth's orbit, which could increase the ...

The solar system is made up of the Earth, the sun and the rest of the planets. Within the system, the planets rotate around the sun in an anticlockwise direction.

We can leave the Solar System, but arriving anywhere is not happening soon What if we dropped interstellar ambitions and focused on understanding our home system?

From Mercury to Pluto (and maybe even Planet Nine), here are some of 2023's most intriguing discoveries about the planets, moons and other bodies in our solar system.