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#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
Lex Fridman Podcast
Extraordinary Claims Require Extra Evidence
Extraordinary claims require extra. It all boils down to that. And the greater your claim, the greater is the evidence that is needed and the more evidence you need from independent ways of measuring or of coming to that deduction. When we found it in 1998 with supernovae, with exploding stars, it was great that there were two teams that lent some credibility to the discovery. But it was not until other astrophysicists used not only that technique, but more importantly, other independent techniques that had their own potential sources of systematic error - they all came to the same conclusion. That started giving a much more complete picture of what was going on.
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