The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

It took two years for NASA's OSIRIS-REx space probe to return from asteroid Bennu before dropping off a small capsule as it ...

Now in its ninth year, the overwhelmingly expansive sci-fi survival sim No Man’s Sky is transforming yet again. Another ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

Join us as we delve into NASA's quest to find extraterrestrial life in the outer solar system. Discover the potential ...

Two new studies show a briny, carbon-rich environment on the parent body of the Bennu asteroid was suitable for assembling ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

Titan is the only moon in our solar system with a significant atmosphere. Now we have a very good idea of how this dense ...