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

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

One of Jupiter's moons known as Io is well known for its intense geological activity, as it has more than 400 active volcanoes, making it the most volcanically active body in the s ...

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 ...

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

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

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

Discover the fascinating findings from asteroid Bennu: pristine salt minerals reveal the presence of liquid water in the ...

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

Hello Games announced the latest No Man's Sky update, Worlds Part II, a free download available on all platforms that the ...

Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...