Follow Orion’s three belt stars southeast (down and to the left) to Sirius in Canis Major, the brightest star in the sky.

The year stood out for its memorable comet activity, with interstellar visitor 3I/ATLAS, along with comets C/2025 A6 (Lemmon) ...

I’d love to counter all that by saying 2025 was an unambiguously great year for music—but that wouldn’t be entirely true ...

A Christmas Tree-shaped star cluster inside NGC 2264 reveals active star formation 2,700 light-years from Earth.

A simple guide to the Dec. 25, 2025 night sky, with viewing tips for the moon, bright planets, and familiar winter stars ...

Just in time for Christmas, a vast star-forming region shaped like a Christmas tree is lighting up space 2,700 light-years ...