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

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 ...

The discovery of two new planets beyond our solar system by a team of astronomers from The University of Warwick and the University of Geneva (UNIGE), is challenging scientific understanding of how ...

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

The outer solar system is a fascinating region that includes a variety of celestial bodies, particularly trans-Neptunian objects (TNOs), which are located beyond the orbit of Neptune. Recent ...

This solar system consists of four inner rocky planets and four outer gas giant planets as well as an asteroid belt, containing thousands of huge rocks, dwarf planets and comets. Our solar system ...

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

The dwarf planet is a bizarre, cryovolcanic world. However, the organic deposits discovered on its surface so far are unlikely to originate from its interior. The organic material found in a few areas ...

The intensity of this inner nebular field was somewhere between ... haven't been many samples that could tell us about the outer solar system," Mansbach says. The team got an opportunity to ...