Comet Lemon to make closest approach to earth on Tuesday Stargazers in Philadelphia and beyond will be treated to a rare celestial sight Tuesday as Comet Lemmon makes its closest approach to earth.

If you’ve not seen the two green comets yet, 90 minutes after sunset on Sunday, Oct. 26, is your last best chance before they fade. The brighter Comet Lemmon (C/2025 A6) and much dimmer Comet SWAN ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Are you ready to see a comet? Comet Lemmon (C/2025 A6) is ...

Another comet, C/2025 A6 Lemmon, is possibly becoming bright enough to be visible to the naked eye in the coming days.(WTOP/Greg Redfern) A year ago, the D.C. region was enthralled with Comet A3 ...

It was early January 2025 when a faint light spot was observed at the Mt. Lemmon Observatory in Arizona. Follow-up observations revealed that the object was a comet visiting from the outer edge of the ...

Update for Oct. 21: Due to cloudy weather, this livestream was rescheduled for Oct. 24, beginning at 1:30 p.m. EDT (1730 GMT). Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are about to reach ...

“Comets are like cats. They both have tails and do what they want,” said comet discoverer David Levy many times. Well, Comet C/2025 A6 (Lemmon) is proving his words true. Most comet-watchers thought ...

Astrophotographer Brennan Gilmore has captured spectacular views of the solar wind stripping a vast section from C/2025 A6 (Lemmon)'s tail, as the icy wanderer continues to brighten ahead of its close ...

In a rare double cosmic treat and once-in-a-lifetime opportunity, stargazers can look to the night sky for two rare comets through October 2025 — and Comet Lemmon and Comet SWAN are visible starting ...

California stargazers are in for a rare celestial double feature. Two comets — C/2025 A6 (Lemmon) and C/2025 R2 (SWAN) — are now visible across the state, offering a once-in-a-lifetime chance to see ...

In October 2025, Comet Lemmon and Comet ATLAS may be visible as they streak across the night sky, providing a rare cosmic treat for skywatchers tonight, Wednesday, Oct. 22, amid the Orionid meteor ...