Comet Lemmon was first discovered on Jan. 3, 2025, by the Mount Lemmon Survey near Tucson, Arizona, and will get closest to ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

Skywatchers of Arizona should clear their schedules. The next few weeks will feature the appearance of supermoons and meteor ...

After a year devoid of comets visible to the naked eye, two of the celestial entities — C/2025 A4 (Lemmon) and C/2025 R2 ...

Due to cloudy weather, this livestream was rescheduled for Oct. 24, beginning at 1:30 p.m. EDT (1730 GMT). Two comets, C/2025 ...

Comet Lemmon is currently racing toward the Sun, while the fainter Comet SWAN is moving away. Both are set to make their ...

A pair of newly discovered comets are making a rare double display in the night sky this week. SWAN and Lemmon, both of which ...

Comet C/2025 R2 (SWAN) was discovered on Sept. 10 by Ukrainian amateur astronomer Vladimir Bezugly. It has brightened ...

The International Asteroid Warning Network (IAWN) launches a global campaign to improve comet astrometry, targeting the ...

Where will 3I/ATLAS be on October 29? The interstellar comet 3I/ATLAS will reach its closest point to the Sun at 1.4 au. It ...

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