A bright new solar system comet could put on a show in the October night sky as it zooms past Earth. Comet C/2025 R2 (SWAN) was discovered on Sept. 10 by Ukrainian amateur astronomer Vladimir Bezugly.
Usually, sunlight makes cometary gases glow green from diatomic carbon (C2) or blue from ionized carbon monoxide (CO+). With ...
Two rare bright comets are visiting our neighborhood this month, making for once-in-a-lifetime viewing. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are already showing off their green tails ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback