Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are about to reach their closest approach to Earth and you can watch the action unfold live online.

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 20 beginning at 1:30 p.m. EDT (1730 GMT) to watch as both comets make a close pass to Earth, making them well placed for observations.

"So far, living in the Northern hemisphere, I could admire C/2025 A6 Lemmon only, but C/2025 R2 SWAN is quickly joining the show and we are ready to amaze every astronomy lover with our live feed!" Masi told Space.com in an email.

You can watch the cosmic show live here on Space.com courtesy of the Virtual Telescope Project or on the project's website or YouTube channel, weather permitting.

Rare double-come

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