Astronomy enthusiasts have a rare opportunity to witness Comet Lemmon (C/2025 A6) in the night sky this Sunday, October 26, before it disappears for more than a millennium. Alongside it, the dimmer ...

Look to the west after sunset, starting near the bright star Arcturus, and you may spot a comet visiting us from the edges of our solar system. The big news in space over the past few months has been ...

Add Yahoo as a preferred source to see more of our stories on Google. A striking new photo of the superbright "Comet Lemmon" (C/2025 A6) shows the partial remains of its sizeable tail, shortly after ...

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. Comet C/2025 A6 (Lemmon) with a glowing green coma and ...

OK, we’ve all probably taken a few days off from trying to spot Comet C/2025 A6 (Lemmon) because of how much light the Moon was casting in our sky after sunset. Old Luna will still be bright for a ...

A comet that was discovered in January will make its closest approach to Earth on Tuesday. If you don’t see it this time around, the only way to see it again is with the help of time travel because it ...

Left to right: Andrew McCarthy, Mike Carroll, and AJ Smadi. Comet C/2025 A6 (Lemmon) made its closest pass to Earth this week and was even visible to the naked eye. Humanity may not see it again for ...

Photographer Josh Dury has captured a gorgeous view of Comet C/2025 A6 (Lemmon) brightening the skies above the UK as it nears planet Earth. This newly discovered comet could soon glow bright enough ...

Now that we’ve passed Halloween and moved into November, comet-watchers expect that Comet C/2025 A6 (Lemmon) will fade. But we really can’t tell right now because the bright Moon is spreading so much ...