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

Like a celestial parade across the cosmos, five bright planets are lighting up the night sky and visible with the naked eye ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

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

So long as the weather cooperates, Saturn, Venus, Mars, Jupiter and the moon will be visible Sunday evening during an open ...

Venus, Mars, Jupiter, Saturn and Mercury are all ... These events occur because all of the planets in the solar system orbit the sun on a relatively flat, disc-shaped plane — akin to cars ...