Tootfinder

A First Look at Spatially Resolved Infrared #SupernovaRemnants in M33 with JWST: https://iopscience.iop.org/article/10.3847/1538-4357/adec7a -> JWST Expands the Search for Extragalactic Supernova Remnants: https://aasnova.org/2025/09/29/featured-image-jwst-expands-the-search-for-extragalactic-supernova-remnants/

Inhomogeneous stellar mixing in the final hours before the Cassiopeia A #supernova: https://arxiv.org/abs/2507.07563 -> NASA's Chandra Reveals Star's Inner Conflict Before Explosion: https://chandra.si.edu/press/25_releases/press_082825.html and https://chandra.si.edu/photo/2025/casa/

A cosmic formation site of silicon and sulphur revealed by a new type of #supernova explosion: https://arxiv.org/abs/2409.02054 -> What Lies Beneath The Outer Layers Of A Star? https://www.sciencefriday.com/segments/supernova-inner-core/

Evidence for an Instability-induced Binary Merger in the Double-peaked, Helium-rich Type IIn #Supernova 2023zkd: https://iopscience.iop.org/article/10.3847/1538-4357/adea38/meta -> UC Santa Cruz-based survey uses AI to spot explosive stellar death by black hole: https://news.ucsc.edu/2025/08/black-hole-supernova/ - machine learning enables real-time detection of fleeting anomalies before they fade away.

Extremely stripped #supernova reveals a silicon and sulfur formation site: https://www.nature.com/articles/s41586-025-09375-3.epdf?sharing_token=-91B1DW3w-guLbzqMqlHyNRgN0jAjWel9jnR3ZoTv0NoiEk03zQVupBWc3RIFpnZ-YbG1aen1S3iwOSFB_RqF1OTO0bm0p0OHR8FBWxK_mN3eXwuH6ArSJP4HcczCXFHQpGcyTSxTYyDRLdjMKS54rLmINcgiC4lgfYYUiIR0lfeQSiucSVktXCGmKwEy2_IMqVFdcWX7jjZmgmaOssqo_tTEwBI3IeJz_wpoAWLQllnGU6ii1DgLBiibeFsnNsdVtR4XCzzQSogTBu5R7SLsA==&tracking_referrer=www.sciencenews.org -> A dying star revealed its heart: https://www.sciencenews.org/article/dying-star-heart-supernova - it’s the first observation of an innermost layer of a massive star.

V Sge - Supersoft Source or Exotic Hot Binary? An X-Shooter campaign in the high state: #supernova so bright it would be visible during the day: https://www.space.com/astronomy/exoplanets/doomed-cannibal-star-could-soon-explode-in-a-supernova-so-bright-it-would-be-visible-during-the-day

Evidence for an Instability-induced Binary Merger in the Double-peaked, Helium-rich Type IIn #Supernova 2023zkd: https://iopscience.iop.org/article/10.3847/1538-4357/adea38 -> AI Helps Astronomers Discover a New Type of Supernova: https://www.cfa.harvard.edu/news/ai-helps-astronomers-discover-new-type-supernova - astronomers have discovered what may be a massive star exploding while trying to swallow a black hole, offering an explanation for one of the strangest supernovae ever seen.

The Type II SN 2025pht in NGC 1637 - A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a #Supernova Progenitor Star: https://iopscience.iop.org/article/10.3847/2041-8213/ae04de -> Webb Telescope unveils doomed star hidden in dust: https://news.northwestern.edu/stories/2025/10/webb-telescope-unveils-doomed-star-hidden-in-dust?fj=1 - new finding could help solve the mystery of the missing massive red supergiants.