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The Universe, Measured

A ladder of distances, the oldest light, and the 95% nobody understands

Leavitt · Hubble · Rubin · 3 chapters · 11 min read

A ladder of distances, the oldest light, and the 95% nobody understands.

Free to read: every chapter below is open

Cosmology

  1. 01A Ladder With No Ground Floor But OneOn a chain of measurements where every rung rests on the one below.
  2. 02Pigeon Droppings and the Oldest LightOn pigeon droppings, and the oldest light there is.
  3. 03Measured Precisely, Not UnderstoodOn measuring something precisely without knowing what it is.