Mercury moves super fast around the Sun, finishing its year in just 88 Earth days. The planet has crazy temperature swings, ...

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Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Recent observations have revealed carbon monoxide venting from the largest comet ever seen, providing clues about its origins ...

Fling your way through the solar system, collecting aliens with Pipette in this epic Horrible Science game! Will you make it to the target or crash and collide with crazy space debris?

Astro Brief is a collaboration between KSMU, the Missouri Space Grant, and MSU's Department of Physics, Astronomy and ...

Explore cool facts about our solar system- from planets and moons to icy edges far away. Photo Credit: NASA. It’s called the “solar system” because “solar” means related to the Sun.

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What ...

Get ready to feel small: The sun is 99.8 percent of the mass of the solar system. Here are more colossal facts about our star.

Jupiter is by far the largest planet in our solar system. The huge ball of hydrogen and helium circling the sun is about 88,000 miles wide, meaning more than 1,300 Earths could fit inside it.