The mysterious space rock suggested to be a hostile alien spaceship was due to make its closest approach to Earth today (Dec ...

A small, icy moon of Saturn called Enceladus is one of the prime targets in the search for life elsewhere in the solar system. A new study strengthens the case for Enceladus being a habitable world.

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

NASA's PUNCH mission is photographing the Sun like never before. It can see comets that are invisible to every other ...

NASA’s Hubble Telescope observed repeated asteroid collisions in Fomalhaut’s planetary system, identifying debris clouds cs1 ...

You can now stream an episode of National Geographic's highly regarded documentary series about planet Earth, hosted by Will ...

A scientific experiment aimed at detecting dark matter in space launched from Antarctica on December 15, with significant ...

Dec. 19 (UPI) -- Comet 3I/ATLAS passed its nearest point to Earth early Friday and approaching within 168 million miles. After its brief visit Friday the interstellar object 3I/ATLAS will head back ...

A new analysis of data from NASA’s Cassini spacecraft may upend Titan’s status as an ocean world. But it might still have ...

Blue Origin’s NS-37 mission will make history by sending Michaela Benthaus, a wheelchair user, to space. The suborbital flight aboard New Shepard crosses the Kármán line, highlighting inclusivity, ...

The popular interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, and is now moving away ...

The Sun’s outflow is supposed to be a one-way trip, with charged particles streaming steadily into interplanetary space. Now ...