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

Kenna Hughes-Castleberry is the Content Manager at Space.com. Formerly, she was the Science Communicator at JILA, a physics ...

The solar system holds extraordinary wonders, from Voyager 1’s historic journey into interstellar space after traveling ...

The findings suggest Earth’s geological story was partly written in the stars – specifically, in the spiral arms of our home ...

This quiz invites you to chase comets through time and space, from ancient omens to modern scientific marvels.

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, astronomers detected a strange, fast-moving object racing toward the Sun. Named ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...