Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...

The universe is supposed to look the same no matter where you stand. That idea, known as the cosmological principle, sits at ...

A small, icy traveler from deep space has just threaded its way through the inner Solar System, offering a fleeting but ...

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but ...

Around 4.4 million years ago—long before humans existed—two massive, blazing-hot stars swept past our solar system. They didn ...

Scientists find that two hot stars passed near our solar system 4.4 million years ago, altering nearby interstellar clouds.

NASA is tracking a mysterious, fast-moving object entering our solar system, raising questions about whether it's just a comet — or possibly something more advanced. The object, known as 3I-ATLAS, was ...

Mobility in space continually cements itself as important in this modern era of space exploration, with satellites like Starlink, Amazon's upcoming Project Kuiper, the International Space Station, and ...

Astronomers are reporting new findings about 3I/ATLAS, the rare interstellar comet now moving through the outer solar system, as NASA and research institutions expand monitoring of the object's ...

Far beyond Neptune, at the far outer rim of our Solar System, astronomers have spotted what looks like a hidden “structure” ...