The Leviathan of Parsonstown

In the 1800s, William Parsons built a telescope larger than any in the world: The Leviathan of Parsonstown. This landmark in science history helped solve the mystery of just what a nebula could be. Hosted by: Hank Green 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: Silas Emrys, Jb Taishoff, Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer ---------- 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: http://bulletin-archive.kenyon.edu/x1446.html http://articles.adsabs.harvard.edu//full/2002JHA....33...57H/0000057.000.html https://www.britannica.com/topic/Messier-catalog http://ecuip.lib.uchicago.edu/multiwavelength-astronomy/optical/history/06.html https://www.historyireland.com/18th-19th-century-history/the-leviathan-of-parsonstown/ http://burro.case.edu/Academics/Astr222/Galaxies/Intro/debate.html Images: https://commons.wikimedia.org/wiki/File:Charles_Messier.jpg https://en.wikipedia.org/wiki/File:M42m.jpg https://commons.wikimedia.org/wiki/File:Image_taken_from_page_384_of_%27The_Half_Hour_Library_of_Travel,_Nature_and_Science_for_young_readers%27_(11301074156).jpg https://en.wikipedia.org/wiki/File:Greate_Telescope,_Birr,_Offaly_2.jpg https://www.nasa.gov/content/goddard/hubble-space-telescope-optics-system https://www.nasa.gov/centers/marshall/multimedia/photos/2010/photos10-094.html https://en.wikipedia.org/wiki/File:40-foot_telescope_mirror.jpg https://en.wikipedia.org/wiki/File:Birr_Castle_by_Henrietta_Crompton.jpg https://en.wikipedia.org/wiki/File:Rosse_six_foot_telescope_mirror.JPG https://en.wikipedia.org/wiki/File:60%22_Mirror_for_William_Parsons,_Earl_of_Rosse_(9237613525).jpg https://en.wikipedia.org/wiki/File:Lossy-page1-6940px-Lord_Rosse%27s_Great_Reflecting_Telescope,_at_Parsonstown,_Ireland_RMG_F8661_(cropped).jpg https://commons.wikimedia.org/wiki/File:El_mundo_f%C3%ADsico,_1882_%22Telescopio_lord_Rosse,_en_Parsontown_(Irlanda)%22._(4051853437).jpg https://en.wikipedia.org/wiki/File:Leviathan_of_Parsonstown..._(8392017304).jpg https://commons.wikimedia.org/wiki/File:Telescopio_Leviatano_Birr.JPG https://commons.wikimedia.org/wiki/File:M51Sketch.jpg https://ned.ipac.caltech.edu/level5/March02/Gordon/Gordon2.html https://en.wikipedia.org/wiki/File:PSM_V74_D518_Steel_building_and_60_inch_reflector.png


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