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

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

Scientists found an intriguing world in our galaxy.

Beyond Neptune lies the Kuiper Belt, a vast expanse of icy bodies that may hold clues to the solar system’s formation. These ...

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

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

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

Astronomers studying data from the Juno spacecraft discovered a volcanic hot spot in the Southern Hemisphere of Jupiter’s moon Io. The volcanic region belches out eruptions six times the total energy ...

An asteroid that orbited near Earth for a few months as a mini-moon may be a chunk of the moon that was blasted off by an impact thousands of years ago.

The eight major planets of our Solar System orbit the Sun in the same flat plane, and all at different speeds. Mercury, the closest planet to the Sun, completes an orbit – a year for the planet ...

The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ...