Learn when and where to see Comet Lemmon and Comet SWAN this October as they light up the night sky in a rare double comet ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Comet C/2025 A6 Lemmon is getting brighter and whether you have a telescope, binoculars or just your eyes, here’s how you can ...

Comet Lemon will be in the heart of the constellation Boötes, the Herdsman, as it makes its closest approach to Earth on Oct.

Chicago-area residents could be treated to a wonderful nighttime display as Comet Lemmon makes its closest approach to Earth in coming days. The comet, also known as Comet C/2025 A6, was discovered ...

A comet is a ball of ice and rock and is a leftover fragment from the formation of the solar system. Comets generally live ...

It will be a while before you can see it for yourself, however. Halley’s comet was last visible from Earth in 1986, meaning ...

A new comet has been starting to become more and more visible in the night sky.

Comet C/2025 R2 (SWAN) is a new visitor from our outer solar system. It may be easier to see as it approaches Earth next week.

Astronomers discovered Comet C/2025 A6 (Lemmon) on Jan. 3 using a 60-inch telescope located at the Mt.Lemmon Observatory in ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...