Earth is far from the only celestial body in the Solar System.

How did the first solids that made up planets, moons and asteroids form from the "hot soup" that characterized our solar ...

Our Solar System stands out because of its planets, moons, orbital structure, and long history of formation. Understanding ...

Our moon is closer in size to Earth than any other moon in the solar system is to its associated planet, however it is far from the largest moon around.

Secret oceans could be hiding in our solar system and scientists are baffled ...

It may not feel like it, but everything in the universe is in constant motion. Our Sun, with all its planets, orbits the center of the Milky Way, flying through the cosmos at around 450,000 miles per ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered ...

A distant 'exomoon' the size of Jupiter is changing how we think about the cosmos.

I find the outer reaches of our solar system fascinating. It’s a place that we know very little about considering how relatively close it is – even its size is up for debate. It’s littered with icy ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our solar system that could support life in some form.