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365 Days of Astronomy - Weekly Edition Podcast
Ep. 682: Ultra-Diffuse Galaxies & Dark Matter

Ep. 682: Ultra-Diffuse Galaxies & Dark Matter

365 Days of Astronomy - Weekly Edition vor 3 Jahren

Full Raw Episode with Q&A

0:00

1:03:35

Astronomers first noticed the strange behaviors of rotating
galaxies almost 100 years ago, suggesting there’s an invisible
dark matter hold them together with gravity. Or maybe we just
don’t understand how gravity works at the largest scales.
Observations are much better now, and astronomers have found
examples of galaxies that are almost entirely made of dark
matter. Does this tell us anything?