How did galaxies — many clusters of billions of stars — become commonplace in the universe? When did the seeds of these galaxies emerge? What did they look like? Get the "Minute Physics" explanation of some of the biggest questions about galaxy formation that the Webb telescope will help answer.
Star formation timescale: http://www.astronomy.ohio-state.edu/\~pogge/Ast162/Unit2/starform.html
(Protostars last ~100,000 years)
James Webb Space Telescope: http://jwst.nasa.gov
Galaxy formation timescales: http://www.astronomy.ohio-state.edu/\~pogge/Ast162/Unit4/interact.html
Hubble eXtreme Deep Field (aka some baby galaxies!): http://xdf.ucolick.org
Population I vs Population II stars: http://hyperphysics.phy-astr.gsu.edu/hbase/starlog/pop12.html
Created by Henry Reich for MinutePhysics
Thanks to NASA’s James Webb Space Telescope project at the Space Telescope Science Institute for supporting this video.
Music by Nathaniel Schroeder
Publication: June 29, 2016