Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about ...

Floating around at the edge of the Solar System are leftovers from its formation. This is the Kuiper Belt, which is composed ...

As the agency's SPHEREx space telescope and PUNCH solar mission rode toward their orbital stations tonight (March 11) at ...

Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and ...

The SPHEREx telescope will create the most colorful map of the cosmos, while the four satellites of the PUNCH mission track ...

They can come from other solar systems and be thrown into interstellar space by collisions or be slingshotted by a planet or star's gravity. Credit: University of Western Ontario Gregg ...

The entire solar system, ours at least, sits inside a pocket of low density called the Local Hot Bubble (LHB). This cavity in space is 1,000 light-years across, at least, and tips the thermometer at ...

Mar. 11, 2025 — A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in ...

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...