3min chapter

Unexplainable cover image

Henrietta Leavitt and the end of the universe

Unexplainable

CHAPTER

What Happened to the Yardstick?

Henrietta Levitt came up with a yardstick to measure the universe. Every time scientists took measurements with this yardstick, it was like the whole universe fundamentally changed. It was not until we started to be able to measure distances in the cosmos that we knew that other galaxies existed.

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