How Do We Know the Age of the Universe?
To support SciShow Space and learn more about Brilliant, go to https://brilliant.org/scishowspace/. Try the lesson in this video for free at https://brilliant.org/SciShowSpaceCosmology What kinds of tools do astronomers use to calculate the age of the universe, and how can they determine the speed of its expansion? Hosted by: Caitlin Hofmeister ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلط الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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://www.nasa.gov/mission_pages/hubble/science/xdf.html https://www.wolframalpha.com/input/?i=atomic+spectrum+of+hydrogen https://www.nobelprize.org/nobel_prizes/physics/laureates/2011/advanced-physicsprize2011.pdf http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1992ARA%26A..30..359B&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1958ApJ...127..513S&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf https://www.cfa.harvard.edu/~dfabricant/huchra/hubble/ http://www.annualreviews.org/doi/pdf/10.1146/annurev.aa.33.090195.002545 Images: http://www.thinkstockphotos.com/image/stock-photo-rustic-southern-american-comfort-food-chicken/585506034 https://en.wikipedia.org/wiki/File:Dark_Energy.jpg https://www.nasa.gov/mission_pages/hubble/science/hst_img_20080520.html https://en.wikipedia.org/wiki/File:Asymmetric_Ashes_(artist%27s_impression).jpg https://commons.wikimedia.org/wiki/File:Ilc_9yr_moll4096.png http://www.esa.int/spaceinimages/Images/2016/06/A_mysterious_hermit
