Earth is about to gain a new “mini-moon,” but it won’t stay around for long.The newly discovered asteroid, named 2024 PT5, ...

Soyuz MS-25 is scheduled to undock from the ISS on Sept. 23 at 4:37 a.m. ET. A NASA astronaut and two record-setting Russian cosmonauts are set to head back to Earth on Monday (Sept. 23), and you can ...

LTT 1445 Ac is roughly the size of Earth and about 22 light-years away in the constellation Eridanus. The planet orbits the ...

Earth's orbit will capture a bus-sized asteroid later this month, giving us a second moon for about two months.

XRISM allowed astronomers to track plasma as it circled the supermassive black hole at a distance of around 0.1 light-years ...

NASA has finished building its spacecraft bus to deploy the Nancy Grace Roman Space Telescope into orbit after the space ...

The spacecraft bus that will deliver NASA's Nancy Grace Roman Space Telescope to its orbit and enable it to function once ...

Get ready for a celestial trifecta on Sept. 17. September's Harvest Moon coincides with a supermoon and partial lunar eclipse, all rolled into one. The spectacle will be visible in clear skies across ...

On Sept. 17, the full moon will put on a dazzling display. While appearing slightly larger-than-average as a "supermoon" it ...

The Harvest Moon on September 17 will be a supermoon and feature a partial lunar eclipse, with only 8.4% of its surface ...

Travel back 390 million years after the big bang to the ancient Maisie's Galaxy in this stunning 3D visualization that ...

Dead satellites still pose a threat to future space missions — and the problem is only getting worse. Here's what we might do ...