Season 1 · Session 06
Mass Bends Light
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If light has no mass, how can gravity change where it goes?
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Einstein's number was exactly twice the Newtonian guess. The whole test hung on that factor of two. Why does it matter so much that a theory predicts a specific number, not just 'light bends a bit'?
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The only way to see stars right beside the Sun is during a total eclipse, a few minutes long and weather permitting. How much of science depends on rare windows where nature lets us look?
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We now use bent light from galaxy clusters as a lens to see further back in time. The same effect that confirmed relativity became a tool. How often does a strange discovery quietly become an instrument?
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How do you feel about this science and its understanding of reality?
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