Comets Lemmon and SWAN are soaring past Earth in a rare cosmic treat. Here's best viewing times, tips and more in Pennsylvania and Delaware.

Will the weather this week allow you to see Comet Lemon? The Mount Lemmon Survey is an astronomical survey that employs a large telescope atop Mount Lemmon, near Tucson, Ariz. The MLS is part of the bigger Catalina Sky Survey,

Comets Lemmon and SWAN are making their closest approach to Earth in a rare cosmic treat. Can you see it in NJ? Here's timing, tips, more.

Comet C/2025 A6 — also known as Lemmon — will make its closest approach to Earth on Tuesday night, Oct. 21, and will continue to brighten as it travels toward the sun. For the next several weeks, should the comet remain intact, it will remain visible in the evening sky, even detectable with the unaided eye in darker skies.

Comets Lemmon and SWAN are nearing Earth in a rare double cosmic treat. Where and what time can you see them? What to know.

They sky is filled with celestial treats this month, including a close Earth-approach by two comets. Can you see in NJ? Timing, tips, more.

The Orionid meteor shower peaked last night. If you missed the show, don’t fret — another spectacle is on its way: Comet Lemmon’s peak.

Comet Lemmon was first spotted on January 3, 2025, by the Mount Lemmon Survey near Tucson, Arizona. Its previous journey through the inner solar system occurred in AD 875, and it is not expected to return until approximately 3175.