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Measuring the Universe With a 14-Billion Light-Year Ruler

Join Joe Hanson as he explores curiosity and illuminates the science behind… well, everything.

Measuring the Universe With a 14-Billion Light-Year Ruler

Season 12 Episode 4 | 10m 40s | CC

Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in.

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