Watch On <\/a>\n<\/div>\n 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.<\/p>\n 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, You can watch the cosmic show live here on Space.com courtesy of the Virtual Telescope Project or on the project’s website<\/u><\/a> or YouTube channel<\/u><\/a>, weather permitting. Having two right comets visible in the sky around the same time is a rare cosmic treat. During the event, Comet Lemmon (C\/2025 A6) will pass about 56 million miles (90 million kilometers) from Earth, while Comet Swan (C\/2025 R2) will soar even closer, at roughly 24 million miles (39 million km). Both are expected to peak in brightness between Oct. 20 and Oct. 21.<\/p>\n Comet C\/2025 A6 (Lemmon) was discovered in January 2025 and has been steadily brightening as it soars through the inner solar system<\/u><\/a>. Lemmon is visible in a pair of binoculars or small telescopes in the western evening sky after sunset, slowly climbing higher each night as it moves northward.<\/p>\n \n The 10X magnification and sub $50 price tag of the Celestron UpClose G2 10×50 binoculars<\/a> make them a great, affordable option for stargazers hoping to get a closer look at Comet Lemmon and SWAN as they glow in Earth’s sky.<\/p>\n<\/div>\n<\/div>\n Comet C\/2025 R2 (SWAN) was discovered in September 2025 by the Solar and Heliospheric Observatory<\/u><\/a>‘s SWAN instrument. It is best viewed in the predawn sky, when the comet appears low on the eastern horizon as it continues its journey away from the sun<\/u><\/a>.<\/p>\n If you’re hoping to spot the comets yourself, check out our guides to the best binoculars<\/u><\/a> and best telescopes for beginners<\/u><\/a>, as well as our how to photograph comets guide<\/u><\/a>. And don’t forget to explore our night sky<\/u><\/a> guide for more celestial highlights this month.<\/p>\n Editor’s note: If you capture a photo of Comet Lemmon or Comet SWAN and would like to share it with Space.com, send your images and comments to spacephotos@space.com.\n<\/p><\/div>\n Comets C\/2025 A6 Lemmon & C\/2025 R2 SWAN at their closest approach to Earth \u2013 online observation – YouTube Watch On 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 … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":6954,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-6953","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.jubi24.com\/wp-content\/uploads\/2025\/10\/Watch-comets-Lemmon-and-SWAN-make-their-closest-approach-to.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/posts\/6953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6953"}],"version-history":[{"count":1,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/posts\/6953\/revisions"}],"predecessor-version":[{"id":6955,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/posts\/6953\/revisions\/6955"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=\/wp\/v2\/media\/6954"}],"wp:attachment":[{"href":"https:\/\/www.jubi24.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jubi24.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n<\/p>\n\n
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.<\/p>\n
\n<\/p>\nRare double-comet encounter<\/h2>\n
![\"Celestron](\"https:\/\/www.jubi24.com\/wp-content\/uploads\/2025\/10\/jyZeFR6YzpcDRoiVcfUufa.jpg\")
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