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ScienceQuiet 8d · day 15

JWST finds that Chariklo's faint rings have changed since first detected

Stellar-occultation observations with the James Webb Space Telescope show the small Centaur's two-ring system has shifted over just a few years, and astronomers don't yet know why.

newest coverage 8d agosummary written 9d ago22 pieces Google NewsMastodonNewswiresReddit

What to know

  • Chariklo, a small Centaur object orbiting between Saturn and Uranus, is the smallest known solar system body confirmed to have rings.
  • New James Webb Space Telescope stellar-occultation observations show its faint, largely invisible ring system has changed in just a few years since prior measurements.
  • Astronomers have not yet identified the mechanism behind the change, raising questions about how rings persist around such a small, low-gravity body.
  • The findings have been published as a peer-reviewed study in Science Advances.

James Webb Space Telescope (JWST) Space observatory that made the observationsChariklo Centaur object beyond Saturn's orbit, subject of the studyInstituto de Astrofísica de Andalucía (IAA-CSIC) Research institute involved in the study

JWST finds that Chariklo's faint rings have changed since first detected
space.com

How it unfolded 3 developments, newest first · click a bar or a number to jump articlesposts

Peak 7 pieces in 4h at Sep 9, 1 PM; 22 pieces over 15 days (16 articles · 5 posts · 1 comment) Sep 9, 1 PM — 7 pieces · 7 articles — Google News 7Sep 9, 5 PM — quietSep 9, 9 PM — quietSep 10, 1 AM — quietSep 10, 5 AM — quietSep 10, 9 AM — quietSep 10, 1 PM — quietSep 10, 5 PM — quietSep 10, 9 PM — quietSep 11, 1 AM — quietSep 11, 5 AM — quietSep 11, 9 AM — quietSep 11, 1 PM — quietSep 11, 5 PM — quietSep 11, 9 PM — quietSep 12, 1 AM — quietSep 12, 5 AM — quietSep 12, 9 AM — quietSep 12, 1 PM — quietSep 12, 5 PM — quietSep 12, 9 PM — quietSep 13, 1 AM — quietSep 13, 5 AM — 2 pieces · 1 article · 1 post — Mastodon 1, Newswires 1Sep 13, 9 AM — quietSep 13, 1 PM — quietSep 13, 5 PM — 2 pieces · 2 posts — Reddit 1, Mastodon 1Sep 13, 9 PM — 1 piece · 1 post — Mastodon 1Sep 14, 1 AM — 5 pieces · 5 articles — Google News 5Sep 14, 5 AM — 1 piece · 1 article — Google News 1Sep 14, 9 AM — quietSep 14, 1 PM — quietSep 14, 5 PM — 1 piece · 1 post — Mastodon 1Sep 14, 9 PM — quietSep 15, 1 AM — quietSep 15, 5 AM — 1 piece · 1 comment — Reddit 1Sep 15, 9 AM — quietSep 15, 1 PM — quietSep 15, 5 PM — quietSep 15, 9 PM — 2 pieces · 2 articles — Google News 1, Newswires 1Sep 16, 1 AM — quietSep 16, 5 AM — quietSep 16, 9 AM — quietSep 16, 1 PM — quietSep 16, 5 PM — quietSep 16, 9 PM — quietSep 17, 1 AM — quietSep 17, 5 AM — quietSep 17, 9 AM — quietSep 17, 1 PM — quietSep 17, 5 PM — quietSep 17, 9 PM — quietSep 18, 1 AM — quietSep 18, 5 AM — quietSep 18, 9 AM — quietSep 18, 1 PM — quietSep 18, 5 PM — quietSep 18, 9 PM — quietSep 19, 1 AM — quietSep 19, 5 AM — quietSep 19, 9 AM — quietSep 19, 1 PM — quietSep 19, 5 PM — quietSep 19, 9 PM — quietSep 20, 1 AM — quietSep 20, 5 AM — quietSep 20, 9 AM — quietSep 20, 1 PM — quietSep 20, 5 PM — quietSep 20, 9 PM — quietSep 21, 1 AM — quietSep 21, 5 AM — quietSep 21, 9 AM — quietSep 21, 1 PM — quietSep 21, 5 PM — quietSep 21, 9 PM — quietSep 22, 1 AM — quietSep 22, 5 AM — quietSep 22, 9 AM — quietSep 22, 1 PM — quietSep 22, 5 PM — quietSep 22, 9 PM — quietYesterday, 1 AM — quietYesterday, 5 AM — quietYesterday, 9 AM — quietYesterday, 1 PM — quietYesterday, 5 PM — quietYesterday, 9 PM — quietToday, 1 AM — quietToday, 5 AM — quiet 123
Sep 10Sep 12Sep 14Sep 16Sep 18Sep 20Sep 22now · 6:44 AM ET
  1. 3

    Study on Chariklo's changing rings appears in Science Advances

    The underlying research is published as a peer-reviewed paper in Science Advances, formalizing the JWST stellar-occultation results on Chariklo's ring system for the scientific record.

    “JWST stellar occultation reveals unexpected changes in Chariklo's ring system…”
    — @cosmos4u@scicomm.xyz

    • If it were orbiting Saturn, it would be 9th in size (it orbits between Saturn and Uranus). It's larger than any of the 15,000 Jupiter Trojans (those trapped by Jupiter's gravity). If it were in the main asteroid belt it would be 16th in size, and there are 1.438 million of those known. It's small compared to major planets and their larger moons…

      danielravennestr/space8d agoview on r/space ↗
    1 more of the top 2 · 2 posts in this stretch
    • cosmos4u@scicomm.xyz

      JWST stellar occultation reveals unexpected changes in Chariklo’s ring system: https://www. science.org/doi/10.1126/sciadv .aeh4794 -> The James Webb Space Telescope discovers that the invisible rings of # Chariklo are changing: https://www. iaa.csic.es/noticia/jwst-descu bre-invisibles-anillos-chariklo-cambiando/

      cosmos4u@scicomm.xyzMastodon9d agoview on Mastodon ↗
    all of them →
  2. 2

    Space.com details the JWST occultation findings on Chariklo

    A fuller writeup explains that Webb's stellar occultation technique captured the shift in the small body's ring system, describing the discovery as showing the rings are more complex than previously understood.

    “Using the James Webb Space Telescope, astronomers have discovered that the ring system of the tiny solar system body is even more interesting than they knew.”
    — Space.com
    • stargazersmith@social.linux.pizza

      https://www. space.com/astronomy/james-webb -space-telescope/james-webb-space-telescope-discovers-the-rings-of-tiny-solar-system-body-chariklo-are-changing

      stargazersmith@social.linux.pizzaMastodon10d agoview on Mastodon ↗
  3. 3 days quiet
  4. 1

    Astronomers report JWST detects changes in Chariklo's rings

    Multiple outlets report that James Webb Space Telescope observations show the ring system of the Centaur object Chariklo has changed in the years since it was first characterized, with the cause not yet understood.

    1. 5 outlets first by srpske.rs, 10d ago · also NewsBytes, Space, Tech Explorist, ScienceDaily · read ↗

    2. 4 outlets Webb Telescope Spots Changes in Chariklo's Rings

      first by srpske.rs, 14d ago · also Sky & Telescope, EurekAlert!, Mirage News

      3 more headlines
    2 more claims →

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