It's an extremely rare opportunity to spot a "relic from the birth of the Solar System." The post Visitor Approaches From the ...

Scientists detected a mysterious object entering the Solar System from deep space — and it immediately started raising ...

Scientists suggest that a fifth, hidden force linked to dark energy may exist in the solar system but has not yet been detected.

Discover the hottest planet in the solar system, why Venus is hotter than Mercury, planet temperature facts, greenhouse ...

Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

And the earth was without form and void, and darkness was upon the face of the deep. Sometimes, if the night is dark and clear enough, you can look up and see the Milky Way in its arc across the sky.

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

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. The ...