Comet 3I/ATLAS was discovered on July 1, 2025, by the NASA-funded ATLAS telescope in Rio Hurtado, Chile and was quickly confirmed to be just the third interstellar visitor to our solar system, after ...

From auroras at 36,000 feet to comet flybys and eclipses, these are the standout images our readers shared with Space.com in ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Have you seen the green comets yet? Two icy visitors from ...

In a rare double cosmic treat and once-in-a-lifetime opportunity, stargazers can look to the night sky for two rare comets through October 2025 — and Comet Lemmon and Comet SWAN are visible starting ...

In a rare doublecosmic treat and once-in-a-millennium visit from an icy green comet, stargazers can look to the night sky through October 2025 to view Comet Lemmon and Comet SWAN, which will be ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet C/2025 A6 (Lemmon) with a glowing green coma and ...

NASA imaged Comet C/2025 R2 (SWAN) every four minutes for nearly 40 days, marking the longest any comet has been tracked with such frequency. When you purchase through links on our site, we may earn ...

In an unprecedented feat of space exploration, NASA’s spacecraft tracked Comet C/2025 R2 (SWAN) with stunning detail, capturing hundreds of images every few minutes over a 40-day period. This ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A green comet continues to shine brightly after sunset for ...

In a double cosmic treat and once-in-a-millennium opportunity, stargazers in October 2025 can look to the sky for two rare comets as they make a close approach to Earth — and Comet Lemmon and Comet ...

Stargazers are in for a rare sight as two comets may be visible to the naked eye in the skies over Ohio as the Orionid meteor shower peaks this week. The two comets, Comet SWAN and Comet Lemmon, were ...