SciShow Space
Where Do the Biggest Galaxies Come From? (2019x93)
Air date: Nov 19, 2019
Submillimeter galaxies are ancient, dense, massive galaxies with up to 10 times the number of stars in the Milky Way, and for a long time, scientists couldn’t even figure out how they existed in the first place.
- Premiered: Apr 2014
- Episodes: 878
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