Not all planets are lucky enough to live in a neighborhood like our Solar System – some are doomed to roam the cosmos alone.

From astronauts looping around the moon to spacecraft reaching Mercury and asteroids near Earth, 2026 is shaping up to be a ...

Hubble Space Telescope images of interstellar object 3I/ATLAS show a changing jet structure, including a stable sunward jet and three rotating inner jets, raising questions about their origin ...

March 25: “Hurrah, and vote for suffrage! Don’t keep them in doubt.” — Febb Burn, a 47-year-old widower, in a letter to her ...

A new "mini-moon" is set to pass relatively close by in the near future, so be sure to have your telescope at the ready to ...

Our 2026 skywatching guide includes a total solar eclipse, a "blood moon" and a festive supermoon. Here are the dates you ...