We previously thought that all galaxies form with the help of dark matter, but researchers just found a galaxy that doesn't seem to contain any. Learn why that's so weird and what it might mean in this episode of BrainStuff.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Why Do We Put Diamonds on Engagement Rings?
11:55

How Did the Stonewall Riots Work?
16:58

How Did the Smallest Primates Get Such Big Eyes?
08:27