In 2022, the James Webb Space Telescope pointed at the oldest light in the universe — and broke the model built to explain it. Galaxies too massive to exist this early. Black holes that outweigh their own galaxies by up to 300 times the normal ratio. Oxygen in a galaxy born just 290 million years after the Big Bang. A structure in the cosmic web eight times larger than physics allows. And a crisis in the most basic number in cosmology — how fast the universe expands — that still has no answer.
This video breaks down what James Webb has actually found, what it means for the Hubble Tension, and why dark energy data now puts the universe's entire fate in question: heat death, the Big Rip, or the Big Crunch.
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