Bullet Cluster: Proof of Dark Matter’s Existence After 20 Years
The 2006 Bullet Cluster study revealed dark matter by showing gravitational mass separated from ordinary gas with 8 sigma certainty. Here’s why it still matters.
astrophysics
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JWST Weighs ‘Sleeping Giant’ Black Hole 6 Billion Times Sun
The James Webb Space Telescope has weighed a dormant supermassive black hole from 10 billion light-years away, revealing it to be 6 billion times the mass of our Sun.