Because planets always appear in a line, the alignment isn't anything out of the norm. What's less common is seeing so many ...

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

Accessible to anyone the world over, witnessing the majesty of the solar system, including the Milky Way, and its billions of stars and planets is a sight to behold. While many nights offer the chance ...

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

Six planets will be in alignment this weekend, with four of them shining bright in one sweeping view. What to know about the ...

A third of planets orbiting close to red dwarf stars ... These exoplanets (planets orbiting a star other than our sun) orbit close to red dwarf stars that are smaller and cooler than the sun ...

Our planet is just the right distance from the Sun for life to exist. We call it a Goldilocks planet because the Earth’s temperature, like the porridge in the Goldilocks fairy tale, is not too ...

Earth, the third planet from the Sun, represents your third closest friend. It appears as a blue and green planet with a moon and red hearts around it. This friend is still quite close ...

The six planets were visible in the days immediately leading up to Jan. 21, and for about four weeks afterward. Mars, Venus, Jupiter and Saturn should be visible to the naked eye. You'll need a ...

An exoplanet is a planet that orbits a star other than our sun. “But the planet is too close to the host star, closer than the habitable zone … even if the star is about 2,500 degrees cooler ...