Sky watchers are in for a once-in-a-lifetime celestial event tonight, as two rare green comets Lemmon (C/2025 A6) and SWAN (C/2025 R2) make their final appearance before vanishing for the next 1,150 years.
According to astronomers, both comets will be visible from the Northern Hemisphere this Friday night, October 24. Viewers with a clear sky and a pair of binoculars can catch a glimpse of their glowing green tails just after sunset.
The comets are expected to appear near the constellation Pegasus, shining faintly but distinctly with a greenish hue caused by diatomic carbon gases emitting light when exposed to sunlight. Experts suggest that rural areas with minimal light pollution offer the best view of this rare spectacle.
Astronomy enthusiasts are urging the public not to miss this opportunity, as the next chance to see these comets will come more than a millennium later. “It’s an extraordinary event something no one alive today will ever witness again,” said an astronomer from the International Cometary Society.
The phenomenon has sparked excitement across online space communities, with enthusiasts sharing viewing tips and photographs of previous sightings. Many observatories have also planned special events to help people witness the dazzling green display.
Meanwhile, scientific interest in the event remains high, as comets like Lemmon and SWAN provide valuable insights into the early composition of our solar system. Researchers are analyzing their chemical makeup to understand how ancient cosmic materials have evolved over billions of years.
This rare cosmic alignment has captured global attention, much like the recent HBO series finale that broke viewership records, marking another unforgettable moment but this time, in the sky.
For those planning to watch, experts recommend finding a dark, open spot away from city lights. Using a telescope or even basic binoculars will enhance the view, as both comets glow faintly yet beautifully against the night sky.
