Astronomers Have Detected an Exomoon for the First Time
Ritsuko KawaiScienceAug 1, 2026 5:00 AMAstronomers Have Detected an Exomoon for the First TimeA discovery in a solar system 73 light-years from Earth is challenging definitions and “blurring the lines between stars, planets, and moons.”Illustration: ESO/M. KornmesserCommentLoaderSave StorySave this storyCommentLoaderSave StorySave this storyAn international research team has discovered evidence of a moonlike body. The new findings challenge that by focusing on an object orbiting the brown dwarf CD-35 2722 B in a system 73 light-years away.A brown dwarf is a celestial body that lies between a planet and a star that lacks the mass required to become a star.
- ▪Ritsuko KawaiScienceAug 1, 2026 5:00 AMAstronomers Have Detected an Exomoon for the First TimeA discovery in a solar system 73 light-years from Earth is challenging definitions and “blurring the lines between stars, planets, and moons.”Illu
- ▪KornmesserCommentLoaderSave StorySave this storyCommentLoaderSave StorySave this storyAn international research team has discovered evidence of a moonlike body.
- ▪The new findings challenge that by focusing on an object orbiting the brown dwarf CD-35 2722 B in a system 73 light-years away.A brown dwarf is a celestial body that lies between a planet and a star that lacks the mass required to become a
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| Original publisher | WIRED |
| Canonical URL | https://www.wired.com/story/astronomer-detect-exomoon-for-first-time/ |
| Publication time | Sat, 01 Aug 2026 09:00:00 +0000 |
| Retrieval time | 2026-08-01T09:05:41.925Z |
| Last seen | 2026-08-01T09:05:41.925Z |
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Opening excerpt (first ~120 words) tap to expand
Ritsuko KawaiScienceAug 1, 2026 5:00 AMAstronomers Have Detected an Exomoon for the First TimeA discovery in a solar system 73 light-years from Earth is challenging definitions and “blurring the lines between stars, planets, and moons.”Illustration: ESO/M. KornmesserCommentLoaderSave StorySave this storyCommentLoaderSave StorySave this storyAn international research team has discovered evidence of a moonlike body. It marks the first time such an object has been detected outside our solar system—though just how close it comes to being a moon is a question researchers are still grappling with.Although more than 6,000 exoplanets have been discovered to date, there’s been a lack of definitive evidence of moons in other planetary systems.
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