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 ...

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

Caribbean sounds help bring the Solar System to life and make space education more inclusive.

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

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 ...