The James Webb Space Telescope has revealed massive, mature galaxies dating back to just a few hundred million years after the Big Bang. But how could they have formed so quickly?
The video explores six baffling ancient galaxies found by Webb. There's a galaxy resembling a cosmic dog bone, merging just 400 million years after the Big Bang. And a clumpy, enormous galaxy from 600 million years after.
These galaxies shouldn't exist based on current cosmological models. Galaxies were thought to form gradually over billions of years, not so fast after the Big Bang.
Do these galaxies force us to revise our theories? Or are they not what they seem? More observations by Webb could confirm their true nature.
Either way, Webb's images are providing an unprecedented glimpse into the early days of galaxy formation and challenging our assumptions. How could such massive galaxies arise so quickly? What other surprises are in store?
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