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 ...

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 ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

The James Webb Space Telescope has provided groundbreaking insights into a new type of exoplanet, fundamentally different ...

Astronomers believe they have spotted three undiscovered moons in our solar system, bringing the rough tally to around 293 natural satellites. The International Astronomical Union's Minor Planet ...

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

These moons were found orbiting the furthest planets in our solar system: one around Uranus ... the International Astronomical Union's Minor Planet Center announced on Friday.

The European Space Agency (ESA) has revealed it is closely monitoring an asteroid that could hit the Earth in 2032. The ...

Scientists suggest an interstellar visitor may have altered planetary orbits in our Solar System, reshaping trajectories of ...

Astronomers have discovered extremely powerful winds pummeling the equator of WASP-127b, a giant exoplanet. Reaching speeds ...

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago.