Look to the southeastern horizon in the hours following sunset on Nov. 29 — you'll be able to see the moon shine close to the ...

A new wave of amateur observations of the interstellar object 3I/ATLAS has revived debate about whether it is behaving like a ...

The moon reaches its first quarter phase on Friday (Nov. 28), marking a perfect opportunity to explore the half-lit lunar ...

When a faint green smudge appeared in images from a backyard telescope in Aguadilla, Puerto Rico, on Nov. 22, 2025, astronomers did not expect it to upend basic assumptions about how comets work. Yet ...

Many stargazers are surprised to learn that stars do not all appear the same but actually display different colors. Those that appear white are hotter ...

Bob Elliot was a professor of astronomy at the University of Wisconsin — Eau Claire during the days when Hobbs Observatory on Beaver Creek Reserve came into being. Seemingly overnight there was a ...

The bright city lights make it hard to see stars in LA. Sure, you see lots of celebrities — we’re not talking about those kinds of stars — but Angelenos ...

Astronomers in the U.S. are tracking a rare comet—C/2025 K1 (ATLAS)—which is something quite special. While comets typically appear green or sometimes blue in sunlight. because of their different ...

"This comet was not supposed to survive its Oct 8th perihelion (0.33 AU)," Bartlett told SpaceWeather.com. "But it did survive, and now it is displaying a red/brown/golden color rarely seen in comets.

This Halloween, look high in the northeastern sky a few hours after sunset for the Ghost’s Goblet — the haunting open cluster NGC 559 in Cassiopeia the Queen. Formally cataloged as Caldwell 8, this ...