Why can’t we nail down how fast the universe is expanding? – Futurity

Silly question. No one can stand outside the universe and clock it as it goes by

(Credit: NASA’s Marshall Space Flight Center/Flickr)

This podcast episode digs into why the Hubble constant is so hard to nail down and how a new method might finally get it right.

Source: Why can’t we nail down how fast the universe is expanding? – Futurity

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