JWST: Bullet Cluster

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The Invisible Universe Revealed: James Webb Captures the Bullet Cluster's Dark Matter Secret Most of the universe is invisible to us. Not because it's hidden. Because it doesn't emit light. Dark matter makes up roughly 85% of all matter in existence, and for centuries, we could only measure its effects—the way galaxies spin faster than they should, the way light bends around massive cosmic structures. Then James Webb looked at the Bullet Cluster, and everything changed. What You're Actually Looking At This isn't just a beautiful photograph. It's evidence. Located 3.8 billion light-years away in the constellation Carina, the Bullet Cluster represents one of the most violent cosmic collisions ever observed: two massive galaxy clusters, each containing thousands of galaxies, that collided at