Sometimes looking into a pool of a toxic liquid holds the secrets of the universe–or maybe just this one time. Hosted by: Hank Green (he/him) ---------- 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/SciShow Or by checking out our awesome space pins and other products over at DFTBA Records: null ---------- 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://adsabs.harvard.edu/full/1991JRASC..85..158G https://adsabs.harvard.edu/full/1986JRASC..80..128O https://archive.org/details/sim_astrophysical-journal_1909-03_29_2/page/164/mode/2up https://adsabs.harvard.edu/pdf/1982JRASC..76..245B https://iopscience.iop.org/article/10.1086/517621/meta https://arxiv.org/pdf/astro-ph/9406057.pdf https://authors.library.caltech.edu/57825/1/396504.pdf https://www.space.com/largest-liquid-mirror-telescope-opens-india http://www.ilmt.ulg.ac.be/home/ https://popups.uliege.be/0037-9565/index.php?id=7498&file=1 https://www.sciencedirect.com/science/article/abs/pii/S0273117797000033 https://www.astro.ubc.ca/lmt/lm/index.html Image Sources: https://commons.wikimedia.org/wiki/File:Robert_Williams_Wood.png https://www.gettyimages.com/detail/photo/night-scene-milky-way-background-royalty-free-image/521011652?phrase=night%20sky&adppopup=true https://www.gettyimages.com/detail/video/scientist-pours-liquid-mercury-onto-gloved-hand-stock-footage/1364002722?phrase=liquid%20mercury&adppopup=true https://www.gettyimages.com/detail/video/southern-ring-nebula-space-collage-from-newest-cosmic-stock-footage/1427673357?phrase=james%20webb&adppopup=true https://commons.wikimedia.org/wiki/File:Portrait_of_Sir_Isaac_Newton,_1689.jpg https://commons.wikimedia.org/wiki/File:Parabolic_mirror_focal_point.svg https://commons.wikimedia.org/wiki/File:LBT_3.JPG https://commons.wikimedia.org/wiki/File:M1grinda94_sd.ogv https://www.gettyimages.com/detail/photo/gemini-royalty-free-image/482692197?phrase=large%20telescope&adppopup=true https://commons.wikimedia.org/wiki/File:James_Webb_Space_Telescope_Mirror37.jpg https://nzetc.victoria.ac.nz/tm/scholarly/tei-Cyc04Cycl-t1-body1-d2-d16-d5.html#name-427991-mention https://archive.org/details/sim_astrophysical-journal_1909-03_29_2/page/166/mode/2up https://archive.org/details/sim_astrophysical-journal_1909-03_29_2/page/170/mode/2up https://www.gettyimages.com/detail/illustration/magical-seamless-pattern-with-the-stars-moon-royalty-free-illustration/1436562368?phrase=old%20star%20map&adppopup=true https://commons.wikimedia.org/wiki/File:Liquid_Mirror_Telescope.jpg https://www.gettyimages.com/detail/photo/space-with-stars-galaxies-and-nebula-deep-space-royalty-free-image/1450303453?phrase=telescope%20graphic&adppopup=true https://www.nasa.gov/image-feature/goddard/2017/hubble-sees-spiral-in-andromeda https://www.flickr.com/photos/astroporn/4999978603/ https://commons.wikimedia.org/wiki/File:Astronomical_Transit_and_Zenith_Telescope_Plate_XXXV_WBClark_1898.jpg https://www.gettyimages.com/detail/photo/astronomer-with-a-telescope-watching-at-the-stars-royalty-free-image/1200892456?phrase=telescope&adppopup=true https://www.astro.ubc.ca/lmt/lzt/gallery.html https://www.gettyimages.com/detail/photo/space-galaxy-royalty-free-image/91713709?phrase=galaxy&adppopup=true https://commons.wikimedia.org/wiki/File:A_Zenith_telescope_set_up_for_observation_at_the_northern_boundary_of_Alberta_Un_t%C3%A9lescope_Zenith_install%C3%A9_pour_l%E2%80%99observation_%C3%A0_la_fronti%C3%A8re_nord_de_l%E2%80%99Alberta_(46911826084).jpg https://www.nasa.gov/centers/ames/multimedia/images/2007/liquidmirror.html https://commons.wikimedia.org/wiki/File:Williams,_Wood_and_Abbot.jpg https://www.researchgate.net/figure/Experimental-setup-for-the-mirror-level-measurement-Left-panel-The-ILMT-air-bearing_fig1_365448905