To receive the same amount of starlight as Mars receives from our sun, a planet orbiting an M-type red dwarf would have to be positioned much closer to its star than Mercury is to the sun. Disclaimer: ...

CLEVELAND — With so much focus on the total solar eclipse right now, I thought some stellar solar system facts would shake up your universe. Let me take you back to grade school and the solar system ...

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies revolving around the sun at a distance ...

Called 3I/ATLAS, the object is only the third of its kind known to astronomers, and it’s likely been heading our way for billions of years, carrying pristine material from another star system Jay ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Our understanding of the solar system is a work in progress. Pluto ...