Space is expansive : looking up to the stars , it can sometimes feel like everything ride on a single , two - dimensional sheet carry up above us . It does n’t , of course of action — so how do we measure how far off things are ?
In this vide , Yuan - Sen Ting explicate how everything from trigonometric parallaxes to , um , stock candles can help us size up space . Above all , it really puts into perspective exactly what we can do from lowly little major planet . [ TED Ed ]
PhysicsScience
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