Exciting news in the cosmos! Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are making a close approach to Earth. You can catch this cosmic event live online on October 20 at 1:30 PM EDT (1730 GMT), thanks to astronomer Gianluca Masi and his Virtual Telescope Project.
So, what makes this event special? Having two comets visible simultaneously is rare. Comet Lemmon will pass about 56 million miles away, while Comet SWAN will be even closer at roughly 24 million miles. Both are expected to shine brightly between October 20 and 21.
Comet C/2025 A6 (Lemmon) was discovered earlier this year. As it travels through our solar system, it has been brightening, making it visible with binoculars or small telescopes in the western evening sky after sunset. Meanwhile, Comet C/2025 R2 (SWAN), discovered in September 2025, is best viewed in the pre-dawn hours, appearing low on the eastern horizon.
Experts say these kinds of dual comet sightings are quite special. According to Dr. Peter Wiegert, an astronomer at the National Research Council of Canada, “Seeing two comets close to Earth at once offers a unique perspective on these beautiful celestial objects.” It’s a chance for both amateur and experienced astronomers to connect with the universe.
People on social media are buzzing about the event. Astronomy enthusiasts are sharing their excitement under hashtags like #CometWatch and #SpaceEvents. If you’re among those eager to gaze at the night sky, this is a perfect occasion!
You can enjoy this spectacle live on Space.com or through the Virtual Telescope Project’s website and YouTube channel, weather permitting. For those aiming to catch a glimpse in person, remember to check out guides on the best binoculars and telescopes for beginners. And feel free to share any photos you take with Space.com, as they’re always eager to see what stargazers capture.
