Spectacular Celestial Event: Comets Lemmon and SWAN Make Their Closest Earth Approach Today

Today marks a spectacular celestial event with the closest approach of two comets to Earth: C/2025 A6 Lemmon and C/2025 R2 SWAN. Both comets will be visible for stargazers, providing a unique opportunity to witness their beauty.
Details of the Celestial Encounter
The closest approach occurs on October 20, 2025, between 1:30 p.m. EDT (1730 GMT). Thanks to the Virtual Telescope Project, enthusiasts can enjoy a live stream of the event.
- Comet Lemmon (C/2025 A6): Approximately 56 million miles (90 million kilometers) from Earth.
- Comet SWAN (C/2025 R2): Closer at about 24 million miles (39 million kilometers) from our planet.
Visibility and Observation
Astronomer Gianluca Masi of the Virtual Telescope Project anticipates a stunning display. C/2025 A6 Lemmon, discovered in January 2025, is currently viewable in the western evening sky through small telescopes or binoculars. Comet C/2025 R2 SWAN, identified in September 2025, can be seen low on the eastern horizon during predawn hours.
Both comets are expected to reach their peak brightness between October 20 and October 21. Observers in the Northern Hemisphere will enjoy an advantageous view, especially with the two comets visible around the same time—a rare treat for astronomy enthusiasts.
How to Observe the Comets
If you’re planning to observe C/2025 A6 Lemmon and C/2025 R2 SWAN, consider using quality binoculars or a beginner-friendly telescope. Here are some resources to assist you:
Don’t miss the chance to witness this rare dual-comet phenomenon. Be sure to check weather conditions for optimal viewing, and if you capture images of this cosmic event, share them with Emegypt.