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SciShow Space | Dark Matter is Slowing Down the Milky Way @scishowspace | Uploaded 3 years ago | Updated 1 minute ago
The effects of dark matter on galaxies is a mystifying and difficult thing to study, but the Milky Way's galactic bar might present an exciting way to quantify how much of it exists!

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Sources:
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eurekalert.org/pub_releases/2021-06/ucl-dmi061421.php
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https://www.vanderbilt.edu/AnS/physics/astrocourses/ast201/angular_momentum.html

Images:
esahubble.org/images/potw2108a
esahubble.org/images/potw2051a
eurekalert.org/multimedia/pub/267827.php
nasa.gov/image-feature/goddard/2021/hubble-snaps-stunning-barred-spiral-galaxy
commons.wikimedia.org/wiki/File:Angular_momentum_conservation.gif
en.wikipedia.org/wiki/File:Hubble2005-01-barred-spiral-galaxy-NGC1300.jpg
nasa.gov/image-feature/bright-blue-stars
commons.wikimedia.org/wiki/File:NGC_6384_HST.jpg
commons.wikimedia.org/wiki/File:Bars_and_Baby_Stars_-_potw2004a.jpg
nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1966-045A

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$The Future of the Search for Life Get 50% off your SciShow Space calendar today by heading to https://complexlycalendars.com/products/scishowspace Astronomers have found more than 5,000 planets in the last three decades, but that’s not nearly as exciting as potentially coming across the first extraterrestrial creatures. And we may finally be in a position to make that discovery. Hosted by: Hank Green (he/him) Thumbnail Courtesy: TMT Observatory Corporation Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, David Brooks, and AndyGneiss! Support SciShow Space by becoming a patron on Patreon: https://www.patreon.com/SciShowSpace Or by checking out our awesome space pins and other products over at DFTBA Records: http://dftba.com/scishow Looking for SciShow elsewhere on the internet? SciShow on TikTok: https://www.tiktok.com/@scishow SciShow Tangents Podcast: http://www.scishowtangents.org Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Instagram: http://instagram.com/thescishow Sources: https://exoplanets.nasa.gov/faq/6/how-many-exoplanets-are-there/ https://www.sciencefocus.com/space/how-far-from-earth-could-aliens-detect-our-radio-signals/ https://www.seti.org/primer-seti-seti-institute https://www.centauri-dreams.org/2020/07/03/a-seti-reality-check/ https://www.ncbi.nlm.nih.gov/books/NBK540092/ https://astrobiology.nasa.gov/about/ https://exoplanets.nasa.gov/resources/2312/spectroscopy-detection-of-biosignatures/ http://spiff.rit.edu/classes/resceu/lectures/spectra/spectra.html http://spiff.rit.edu/classes/resceu/lectures/spectra/ans_trans_frac.txt https://academic.oup.com/mnras/article/448/3/2546/1109920 https://astrobiology.nasa.gov/news/detecting-lifes-influence-on-planetary-atmospheres https://www.liebertpub.com/doi/10.1089/ast.2017.1727 https://bio.libretexts.org/Bookshelves/Microbiology/Book%3A_Microbiology_(Boundless)/8%3A_Microbial_Evolution_Phylogeny_and_Diversity/8.15%3A_Euryarchaeota/8.15C%3A_Methane-Producing_Archaea Methanogens https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4323125/ https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/rog.20011 https://www.pnas.org/doi/10.1073/pnas.2117933119 https://arxiv.org/pdf/2208.07393.pdf https://iopscience.iop.org/article/10.3847/1538-4357/ac8cfb https://exoplanets.nasa.gov/trappist1/ https://iopscience.iop.org/article/10.3847/1538-4357/aa7fea https://www.newscientist.com/article/mg25233640-700-3-of-the-most-exciting-space-telescopes-planned-for-launch-by-2034/ https://asd.gsfc.nasa.gov/luvoir/design/ https://asd.gsfc.nasa.gov/luvoir/reports/LUVOIR_FinalReport_2019-08-26.pdf https://arxiv.org/abs/2105.09990 https://www.researchgate.net/publication/7801784_Vegetations_Red_Edge_A_Possible_Spectroscopic_Biosignature_of_Extraterrestrial_Plants https://phys.org/news/2020-03-clouds-obscure-view-exoplanet-surfaces.html https://www.cfa.harvard.edu/facilities-technology/telescopes-instruments/giant-magellan-telescope https://arxiv.org/pdf/1705.05791.pdf https://www.nasa.gov/feature/goddard/2022/nasa-s-webb-detects-carbon-dioxide-in-exoplanet-atmosphere https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-reveals-steamy-atmosphere-of-distant-planet-in-detail Images: https://commons.wikimedia.org/wiki/File:NASA-Exoplanet-WaterWorlds-20180817.jpg https://svs.gsfc.nasa.gov/13375 https://commons.wikimedia.org/wiki/File:Artist%E2%80%99s_impression_of_the_European_Extremely_Large_Telescope_(15761494008).jpg https://www.nasa.gov/image-feature/a-spin-around-an-exoplanet-most-like-earth https://exoplanets.nasa.gov/resources/2312/spectroscopy-detection-of-biosignatures/ https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-reveals-steamy-atmosphere-of-distant-planet-in-detail https://commons.wikimedia.org/wiki/File:Exoplanet-WASP-39b-20180301.jpg https://www.eurekalert.org/news-releases/772739 https://commons.wikimedia.org/wiki/File:Sea_lettuce_in_Brofjorden_1 cropped.jpg https://www.flickr.com/photos/ex_magician/4235161003 https://commons.wikimedia.org/wiki/File:NASA-RedDwarfPlanet-ArtistConception-20130728.jpg https://svs.gsfc.nasa.gov/30870 https://www.esa.int/Science_Exploration/Space_Science/Plato_factsheet https://commons.wikimedia.org/wiki/File:Rendering_of_LUVOIR-A_observatory,_2019.png https://commons.wikimedia.org/wiki/File:Hubble_ultra_deep_field.jpg https://commons.wikimedia.org/wiki/File:Giant_Magellan_Telescope artist%27s_concept.jpg https://commons.wikimedia.org/wiki/File:Top_view_of_tmt_complex.jpg$

Dark Matter is Slowing Down the Milky Way @scishowspace