Where Do Galaxies Come From?
About this video
Duration: 2 minutes, 54 seconds

You can see this video here, on the MinutePhysics YouTube channel.

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

Galaxy Formation, Illustrative, Universe


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

Production: June 28, 2016

Publication: June 29, 2016