The Solar System is a vast and varied landscape offering an array of planetary and moonscape phenomena unlike anything found ...

For over 100 years, scientists have been hell-bent on talking to aliens, and new technology could give that hunt a boost.

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long ...

The revelation that Pluto and its large moon may have collided, causing Pluto to be geologically active, could mean there are ...

Venus, Mars, Jupiter, Saturn, Uranus, and Neptune were already visible in the night sky after dusk this month, but Mercury joined them on Feb. 28. While it's common to see a few planets line up in the ...

Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

"It's like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to ...

A rare celestial event will take place tonight as a planetary parade lines up in the sky, offering a view of every planet in the solar system—except Earth.

Tonight, looking up into the night will bring a treat to the eyes as every planet in the solar system can be viewed.

A stunning planet parade is now visible in the night sky. A planet parade is when several of our solar system's planets are ...

The triple star system is sending comets, asteroids and meteors our way, and the number of interstellar objects entering the solar system will rise.

The parade of planets, when all seven of earth's solar system neighbors can be seen in the night sky, starts Friday and continues through next week.