GoKawiilWebb telescope shows Chariklo's rings shifting dramatically in a decade
Astronomers led by Pablo Santos-Sanz used the James Webb Space Telescope to re-observe a stellar occultation by Chariklo, a small icy body about 250 kilometers wide orbiting between Saturn and Uranus. Compared to the rings first detected in 2013, one of Chariklo's two narrow rings has become denser while the other has nearly disappeared, and the cause remains unclear.
GoKawiil's interpretation of the reporting above, not reported fact.
Chariklo was the first small body discovered to have rings, upending assumptions that only giant planets could host them, so tracking how its ring system evolves offers rare insight into the physics of ring formation and stability at small scales. Understanding why one ring thickened while the other faded could reveal whether such rings are transient debris fields or more persistent structures, reshaping theories about ring longevity across the Solar System.
- Chariklo, a ~250 km body between Saturn and Uranus, was the first small object found to have rings, in 2013.
- New JWST observations show one ring has become denser and the other has nearly vanished over about a decade.
- Scientists still don't know what caused the dramatic change, raising questions about how long such rings can persist.
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See Celestron NexStar 8SE Telescope on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: arstechnica.com, 2026-09-19
Published there as: “Rings around a tiny body have changed over the past decade”
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