The Supernova We May See Twice | Athena, a Cosmic Prediction

A star exploded once. Why might its light appear again? George Walker follows supernova Athena behind the galaxy cluster MACS J0417, from the real Webb and Hubble observations to the predicted delayed image and the hidden mass that bends its light. The predicted return has not been confirmed as of our 31 October 2026 source check. VENUS forecasts a window extending into early March 2027. This film labels actual Athena observations, other astronomical case studies, and explanatory diagrams separately. Chapters 00:00 The prediction 00:59 A prediction in the sky 02:42 Why Webb noticed Athena 03:34 The question-mark galaxy 05:20 Gravity bends a path 07:04 The routes take different times 09:40 How the search is organized 11:20 Three maps, not one answer 13:05 The Refsdal precedent 15:35 Mapping invisible mass 17:16 The Hubble constant question 20:40 Why the spectrum matters 23:18 What the next visit can teach 25:41 Closing and more to watch Quick question: if Athena returns earlier or later than forecast, what would you want astronomers to check first? Tell us in the comments. Science references: https://science.nasa.gov/missions/hub... https://jwst-venus.github.io/news.html https://science.nasa.gov/missions/web... https://science.nasa.gov/missions/hub... Visual source credits (original footage audio removed): • NASA Goddard Space Flight Center Conceptual Image Lab; animator Jonathan North — https://svs.gsfc.nasa.gov/20413/ • NASA, ESA, STScI, M. Pascale (UCLA); Image Processing: J. DePasquale (STScI) — https://esahubble.org/images/opo2623/ • NASA Goddard Space Flight Center Conceptual Image Lab; animator Adriana Manrique Gutierrez — https://svs.gsfc.nasa.gov/20244/ • NASA, ESA, CSA, STScI, V. Estrada-Carpenter (Saint Mary’s University) — https://esawebb.org/images/questionma... • NASA, ESA, CSA, STScI, V. Estrada-Carpenter (Saint Mary’s University) — https://esawebb.org/images/questionma... • NASA & ESA and P. Kelly (University of California, Berkeley) — https://esahubble.org/images/heic1525a/ • NASA, ESA, Steve A. Rodney (University of South Carolina), Gabriel Brammer (Cosmic Dawn Center/Niels Bohr Institute/University of Copenhagen), Joseph DePasquale (STScI) — https://esahubble.org/images/opo2130a/ • NASA, ESA, A. Pagan (STScI) — https://esahubble.org/images/heic2214c/ • ESA/Webb, NASA & CSA, G. Mahler; acknowledgement M. A. McDonald — https://esawebb.org/images/potm2503a/ • ESA/Webb, NASA & CSA, S. Fujimoto — https://esawebb.org/images/potm2606a/ • ESA/Webb, NASA & CSA, L. Furtak, S. Fujimoto — https://esawebb.org/images/potm2609a/ • ESA/Webb, NASA & CSA, G. Gozaliasl, A. Koekemoer, M. Franco, N. Bartmann (ESA/Webb) — https://esawebb.org/videos/potm2509a/ • ESA/Webb, NASA & CSA, J. Rigby and the JWST TEMPLATES team, N. Bartmann (ESA/Webb) — https://esawebb.org/videos/potm2312a/ • ESA/Webb, NASA & CSA, G. Mahler, N. Bartmann (ESA/Webb); acknowledgement M. A. McDonald — https://esawebb.org/videos/potm2503a/ • ESA/Webb, NASA & CSA, S. Fujimoto, N. Bartmann (ESA/Webb) — https://esawebb.org/videos/potm2606a/ • ESA/Webb, NASA & CSA, L. Furtak, S. Fujimoto, N. Bartmann (ESA/Webb) — https://esawebb.org/videos/potm2609a/ • NASA's Goddard Space Flight Center (Webb artist animation) — https://svs.gsfc.nasa.gov/13547 • NASA's Goddard Space Flight Center (Webb artist animation) — https://svs.gsfc.nasa.gov/13549 • NASA's Goddard Space Flight Center/Conceptual Image Lab (galaxy flight concept) — https://svs.gsfc.nasa.gov/14950 • ESA/ATG medialab (instrument explanation) — https://esawebb.org/videos/NIRSpec-In... NASA visual policy: https://www.nasa.gov/nasa-brand-cente... . NASA SVS: https://svs.gsfc.nasa.gov/help/ . ESA/Webb and ESA/Hubble visual reuse: https://esawebb.org/copyright/ and https://esahubble.org/copyright/ . NASA and ESA do not endorse this channel. Thumbnail artwork: illustrative concept, not an observation of Athena. Music: Light Through Ice, licensed by the channel owner. Original diagrams and editorial assembly: Tomorrow Unraveled. Subscribe:    / @tomorrowunraveled   #Supernova #Athena #Hubble #Webb #SpaceDocumentary