The alignment of seven planets in the night sky has captivated observers for centuries, inspiring awe and curiosity. This celestial event, commonly referred to as a planetary parade, is not just a ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

Just as Sun, Moon, Mercury, Venus and Mars move through the signs of the zodiac as they orbit, so do the outer planets.

When we first began searching for planets around other stars, one of the surprising discoveries was that there are planets orbiting white dwarfs. The first exoplanets we ever discovered were white ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Scientists found an intriguing world in our galaxy.

Retrogrades are often misunderstood as chaotic but are actually opportunities for reflection and growth. Each type of ...

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.