How We Discovered the Milky Way s Black Hole

This video was sponsored by Coursera. Go to Coursera to check out their courses, like IBM’s Data Science Professional Certificate: http://go.thoughtleaders.io/1030720190709. The first 100 people to enroll in the IBM Data Science certification before the end of July will get their first month for free. The search began with a physicist checking for sources of static on phone calls in the 1930s, but it took several decades to finally make one of the biggest discoveries in astronomy, Sagittarius A*. Hosted by: Reid Reimers SciShow has a spinoff podcast! It s called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://arxiv.org/pdf/astro-ph/0305074.pdf https://www.airspacemag.com/space/12_fm2017-mysteries-of-sagittarius-a-180961673/ https://www.nrao.edu/whatisra/hist_jansky.shtml https://arxiv.org/pdf/astro-ph/9807210.pdf https://arxiv.org/pdf/1210.1294.pdf https://www.nasa.gov/mission_pages/chandra/multimedia/black-hole-SagittariusA.html https://archive.briankoberlein.com/2015/10/14/how-does-interferometry-work/ http://blogs.discovermagazine.com/crux/2018/07/26/sagittarius-a-star/#.XP1jo9NKiRs http://nautil.us/issue/69/patterns/how-supermassive-black-holes-were-discovered https://www.pnas.org/content/107/16/7196 https://eventhorizontelescope.org/about https://science.nasa.gov/astrophysics/focus-areas/black-holes http://hubblesite.org/explore_astronomy/black_holes/encyc_mod1_observatories.html https://www.nasa.gov/vision/universe/starsgalaxies/black_hole_description.html Image Sources: https://www.jpl.nasa.gov/news/news.php?feature=7372 https://www.istockphoto.com/photo/milky-way-night-sky-gm529681178-93312189 https://en.wikipedia.org/wiki/Green_Bank_Interferometer#/media/File:Howard_E._Tatel_Radio_Telescope_-_side.jpg https://commons.wikimedia.org/wiki/Category:LIGO_(Livingston)#/media/File:Ligo-livingston-aerial-03_599x400.jpg https://commons.wikimedia.org/wiki/File:Sagittarius_region_.jpg https://commons.wikimedia.org/w/index.php?search=Karl+Jansky&title=Special:Search&profile=advanced&fulltext=1&advancedSearch-current=%7B%7D&ns6=1&ns12=1&ns14=1&ns100=1&ns106=1&ns0=1#/media/File:Karl_Jansky.jpg https://commons.wikimedia.org/wiki/File:Chandra_image_of_Sgr_A.jpg