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 ...

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 ...

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

The orbits of Jupiter, Saturn, Uranus and Neptune may have been forever changed by an enormous object that whizzed through ...

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

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 ...

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 ...

A planet-sized visitor possibly visited the solar system billions of years ago and permanently changed the cosmic neighbourhood by warping the orbital path of four outer planets of the system, a ...

The exoplanet, which has been named HD 20794 d, orbits in the ‘habitable zone’ of a nearby star similar to our sun.