A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

Normal gases, like the air you breathe on Earth, are made up of atoms bouncing around. Atoms consist of a positively charged bundle of particles called the nucleus and negatively charged particles ...

For nearly twenty years, satellites have quietly gauged the flow of sunlight and heat through the Earth’s atmosphere. Today, ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, ...

The asteroid belt may seem permanent, but it is far from static. Its slow decline reveals a more violent past when more ...

The National Aeronautics and Space Administration has confirmed an interstellar object is passing through our solar system.

Concentrated hydrogen in the galaxy’s spiral arms can be locked away in zircon crystals, providing startling clues about the ...

About 4. 6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity.