Mars, Venus, Jupiter, Saturn, Uranus and Neptune will appear together in a row throughout the start of February – although Neptune and Uranus will only be visible with binoculars or a telescope.

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see. The show is in ...

A Triple Star System Yields an Unusual Surviving Star Unlike our Sun, which exists alone, at least half of the stars in our ...

When an exoplanet is discovered, scientists are quick to describe it and explain its properties. Now, we know of thousands of ...

NASA has warned two massive asteroids 2025 BS4 and 2025 BH2 are set to come dangerously close to Earth today. Asteroid 2025 ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

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

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

Astronomers have made a groundbreaking discovery in the WASP-132 system, finding two new planets that defy previous ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia. Just how this cosmic waltz would look with a 'super-Earth' in place of the ...