Season 1 · Session 08
Ripples in Spacetime
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How do you detect a stretch in space smaller than a proton?
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The merger released more energy than all the stars in the visible universe, but as a ripple in space rather than as light. What does it mean for energy to travel as a change in the shape of space?
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Light from those black holes could never reach us, because they emit none. We only know they collided because space twitched. What else might be out there that light can't show us?
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Einstein predicted this in 1916 and thought it undetectable. It took 100 years of instrument-building to catch one wave. Does a prediction we can't yet test count as science?
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How do you feel about this science and its understanding of reality?
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