# \#cosmic-distance-ladder

**URL:** https://scanalyst.fourmilab.ch/tag/cosmic-distance-ladder/2046.md

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## [Measuring the Universe—The Cosmic Distance Ladder](https://scanalyst.fourmilab.ch/t/measuring-the-universe-the-cosmic-distance-ladder/1443)

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**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\
**Replies:** 13\
**Last updated:** [30 May 2022 20:49 UTC](https://scanalyst.fourmilab.ch/t/measuring-the-universe-the-cosmic-distance-ladder/1443 "2022-05-30T20:49:17Z")

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Here is more information on the cosmic distance ladder and how each step was discovered and refined. It is remarkable that it was less than a century ago when it was definitively established that “spiral n…