What is the universe expanding into? - Sajan Saini

Join TED-Ed's Student Program: http://bit.ly/2Nps4NW View full lesson: https://ed.ted.com/lessons/what-is-the-universe-expanding-into-sajan-saini The universe began in a Big Bang nearly fourteen billion years ago, and has been expanding ever since. But how does the universe expand and what is it expanding into? Sajan Saini explains the existing theories around the Big Bang and what, if anything, lies beyond our universe. Lesson by Sajan Saini, directed by Wooden Plane Productions. Thank you so much to our patrons for your support! Without you this video would not be possible! Justin Carpani, Faiza Imtiaz, Khalifa Alhulail, Tejas Dc, Benjamin & Shannon Pinder, Srikote Naewchampa, Ex Foedus, Sage Curie, Exal Enrique Cisneros Tuch, Ana Maria, Vignan Velivela, Ibel Wong, Ahmad Hyari, eden sher, Travis Wehrman, Louisa Lee, Kiara Taylor, Hoang Viet, Nathan A. Wright, Jast3r , Аркадий Скайуокер, Milad Mostafavi, Rob Johnson, Ashley Maldonado, Clarence E. Harper Jr., Bojana Golubovic, Mihail Radu Pantilimon, Benedict Chuah, Karthik Cherala, haventfiguredout , Violeta Cervantes, Elaine Fitzpatrick, Lyn-z Schulte, cnorahs , Henrique 'Sorín' Cassús, Tim Robinson, Jun Cai, Paul Schneider, Amber Wood, Ophelia Gibson Best, Cas Jamieson, Michelle Stevens-Stanford, Phyllis Dubrow, Andreas Voltios, and Eunsun Kim.