Galaxy Formation Explained | Cosmology 101 Episode 4

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In this episode of Cosmology 101, we explore the incredible discoveries made by the Hubble Space Telescope and the James Webb Space Telescope (JWST).

Learn about concepts like cosmic cannibalism, where galaxies merge and devour each other, and discover how these violent interactions shape the universe.

Join Katie Mack, Perimeter Institute’s Hawking Chair in Cosmology and Science Communication, on an incredible journey through the cosmos in our new series, Cosmology 101.

Follow the edge of theoretical physics on our social media:

Follow our host "AstroKatie" Katie Mack:

Asset Credits:
0:43: R. Williams, the Hubble Deep Field Team and NASA, Hubble deep field 1995
0:58: Travel through space
1:19: NASA, Public domain, via Wikimedia Commons, Picture of JWST.
1:32: NASA, ESA, CSA, STScI, JADES Collaboration, JWST distant/early galaxies
3:32: S. Payne-Wardenaar / K. Malhan, MPIA, Milky Way stellar streams from GAIA satellite data. Max Planck Institute
4:50: NASA/JPL-Caltech/GSFC, ARP299 supernova
4:54: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M.Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESA “The Mice” galaxy merger
5:33: NASA, ESA, Z. Levay and R. van der Marel (STScI), T. Hallas, and A. Mellinger Andromeda + Milky Way collision

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Pretty interesting about those early galaxies. What an amazing event galaxies coming together is.

WingZeroDuality
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I would have expected star and galaxy formation would have been a GREAT DEAL faster in the early universe simply because the density was so much higher. If a a Hydrogen atom is nearer another one, what is stopping them closing and fusing? Similarly, if a neiughbour galaxy is only a few thousnd light years away, instead of millions, what is too stop them merging quickly and developing modern structure.

adrianworley
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Milky Way X Andromeda, only the living (then) will see this merge!

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