Mama, Where Do Galaxies Come From?

For most of human history, we didn t know that galaxies were a thing. So over the past century, astronomers have been working to understand how galaxies come to be and how they evolve over time. And for a full decade, there was one telescope helping to light the way. Hosted By: Hank Green ---------- Huge thanks go to the following Patreon supporter for helping us keep SciShow Space free for everyone forever: Jason A Saslow, AndyGneiss, and David Brooks! 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://ned.ipac.caltech.edu/level5/March01/Marcum/Marcum2.html https://astronomy.swin.edu.au/cosmos/m/main+sequence+lifetime https://www.britannica.com/science/red-dwarf-star http://www.galex.caltech.edu/media/glx2004-01r_img06.html http://www.galex.caltech.edu/about/overview.html http://www.galex.caltech.edu/newsroom/glx2007-01f.html http://www.galex.caltech.edu/newsroom/glx2007-05f.html http://www.galex.caltech.edu/newsroom/glx2009-01r.html http://www.galex.caltech.edu/newsroom/glx2010-03f.html http://www.galex.caltech.edu/newsroom/glx2013-03r.html https://www.jpl.nasa.gov/news/press_kits/galex.pdf https://asd.gsfc.nasa.gov/archive/galex/Documents/MissionOverview.html https://www.nasa.gov/content/hubble-space-telescope-advanced-camera-for-surveys https://iopscience.iop.org/issue/0067-0049/173/2 Images: https://commons.wikimedia.org/wiki/File:Swimming_in_Sculptor.jpg https://commons.wikimedia.org/wiki/File:GALEX_spacecraft_model.png https://www.gettyimages.com/detail/photo/night-sky-with-stars-and-soft-milky-way-universe-as-royalty-free-image/971578384?adppopup=true https://www.gettyimages.com/detail/illustration/set-of-electromagnetic-spectrum-diagram-or-royalty-free-illustration/1311362176?adppopup=true https://www.gettyimages.com/detail/photo/blue-hot-sun-royalty-free-image/157505921?adppopup=true https://commons.wikimedia.org/wiki/File:Morgan-Keenan_spectral_classification.png https://www.flickr.com/photos/gsfc/3927825968 https://commons.wikimedia.org/wiki/File:Atmospheric_Transmission.png https://commons.wikimedia.org/wiki/File:GALEX_Pegasus.jpg http://www.galex.caltech.edu/media/glx2005-02r_img08.html https://commons.wikimedia.org/wiki/File:GALEX_Field_of_View.jpg http://www.galex.caltech.edu/media/glx2016-01f_img01.html https://www.nasa.gov/multimedia/imagegallery/image_feature_972.html http://www.galex.caltech.edu/media/glx2007-05f_img02.html http://www.galex.caltech.edu/media/glx2007-05f_img05.html https://commons.wikimedia.org/wiki/File:Abell_S740,_cropped_to_ESO_325-G004.jpg http://www.galex.caltech.edu/media/glx2007-05f_img01.html https://www.nasa.gov/mission_pages/galex/big-brother-milky-way.html http://www.galex.caltech.edu/media/glx2004-01r_img06.html https://commons.wikimedia.org/wiki/File:Galaxy_cluster_PLCK_G004.5-19.5_A_window_into_the_cosmic_past.jpg https://commons.wikimedia.org/wiki/File:MACSJ1423.8%2B2404.jpg https://www.nasa.gov/mission_pages/galex/galex20100811.html https://commons.wikimedia.org/wiki/File:NGC4676.jpg https://commons.wikimedia.org/wiki/File:Galaxy_Evolution_Explorer,_2003.jpg