Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, an enormous, donut-shaped region of icy objects ...

Consider whether every planet in our solar system could have a hidden twin and what that would mean. Marjorie Taylor Greene ...

As this month's string of powerful X-class solar flares sparked brilliant auroras that lit up skies across an unusually wide ...

While last week's stunning auroras delighted many people across Australia, a massive solar storm that hit last year squeezed ...

It's a long trip to the red planet and space is tight, but eating well could require just a few simple ingredients.

Spectroscopy of other stars has led to most discoveries of exocomet systems. In research led by University of Colorado ...

To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed ...

PUNCH’s observations of comet 3I/ATLAS from Sept. 28 to Oct. 10, 2025, when the comet was between 231 million to 235 million ...

Tossing a bad guy into the Sun sounds simple enough, but orbital mechanics make it a far trickier task than you'd expect.

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.