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Sirius is the brightest star in the sky and visible from most of the planet. We've been staring at it for 1000s of years, but the more we learn about it, the weirder it gets. Watch this video ad-free on Nebula: https://nebula.tv/videos/scienceasylu... Nick Lucid - Host, Writer, Editor, Animator Em Lucid - Producer Huge thanks to 12Tone and Simon Clark for lending their voices: / @12tone / @simonclark ________________________________ VIDEO ANNOTATIONS/CARDS Friedmann Equations: • Physics predicts all of Cosmic Time. ... ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: / scienceasylum Sign-Up for Nebula: https://go.nebula.tv/scienceasylum YouTube Membership: / @scienceasylum Advanced Theoretical Physics (Paperback): https://www.scienceasylum.com/paperback Advanced Theoretical Physics (eBook): https://www.scienceasylum.com/ebook Merchandise: https://www.scienceasylum.com/store ________________________________ HUGE THANK YOU TO THESE SUPPORTERS Asylum Counselors: Joe K. Kim Asylum Orderlies: Chloë Joan López, Dhruv Singhal, James Smith, Joel Wolhendler, Medec Hurtz, Peter Engrav Einsteinium Crazies: Benjamin Sharef, Dan Sullivan, Eoin O'Sullivan, Jonathan Lima, Joseph Salomone, Kevin Flanagan, Matias Cveczilberg, Sheila Owen, William Hutchison Plutonium Crazies: Al Davis, Compuart, Ellis Hall, Kevin MacLean, Rex_zane, Rick Myers, Vasile Coman, Vid Icarus Platinum Crazies: Cesar Moya, Christopher Bennett, Clayton Bruckert, David Johnston, Fabio Manzini, Ishay Oz, Jonathan Reel, Joshua Gallagher, Li-Ce Hu, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, P. Patrick Tukkers, Qin Li, Ulrich, Zachary Milne ________________________________ SOURCES Generic History: https://www.amnh.org/learn-teach/curr... http://vega.lpl.arizona.edu/sirius/A5... https://adsabs.harvard.edu/full/2007J... Bessel's Original Publication: https://adsabs.harvard.edu/pdf/1844MN... Lewis Boss Data: https://lccn.loc.gov/10009645 Walter Adams Publications: https://adsabs.harvard.edu/full/1911A... https://iopscience.iop.org/article/10... https://iopscience.iop.org/article/10... https://iopscience.iop.org/article/10... Eddington Quote: https://archive.org/details/in.ernet.... Naming Conventions: https://www.iau.org/public/themes/nam... Planetary Nebula Info: https://www.astronomy.com/science/sir... Modern Sirius Specs: https://arxiv.org/abs/1703.10625 Current Mystery: https://www.syfy.com/syfy-wire/why-so... ________________________________ LINKS TO COMMENTS • Physics predicts all of Cosmic Time. ... ________________________________ IMAGE/VIDEO CREDITS Hubble Image of Sirius: https://esahubble.org/images/heic0516a/ Sirius Dog Art: https://commons.wikimedia.org/wiki/Fi... Contact Binary: https://www.eso.org/public/videos/eso... Ring Nebula: https://www.nasa.gov/feature/goddard/... Koenigsberg Observatory: https://commons.wikimedia.org/wiki/Fi... Portraits: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://repository.aip.org/islandora/... ________________________________ TIME CODES 00:00 Intro 00:41 Friedrich Bessel postulates Sirius B 02:41 Declination and Right Ascension 03:11 Alvan Clark discovers Sirius B 04:15 The Hunt for More Data 04:57 HR Diagrams 07:07 Stefan-Boltzmann Law 07:33 Insane Density of White Dwarfs 08:37 White Dwarfs and Planetary Nebulas 10:08 Sirius in the Distant Past 10:49 Closing Thoughts 11:11 Featured Comment ________________________________ Corrections: 07:14 While what I'm saying here is correct, the equation isn't using traditional symbols. It would have been better to have written the equation as L ∝ A T⁴, but oh well.