Hubble's velocity versus distance plot shows several scattered data points. Two linear fit lines, one solid and one dashed, are drawn through the data.

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1. Robert McNees (mcnees@mastodon.social)'s status on Sunday, 20-Nov-2022 20:21:28 UTC Robert McNees

   in reply to

   By 1929, Hubble had collected (with the help of Milton Humason's careful telescope work) distance measurements for several galaxies. Combining these with Vesto Slipher's redshift measurements, he proposed a relationship between distance and recession velocity. More distant galaxies were moving away from us more rapidly.

   Hubble's paper "A relation between distance and radial velocity among extra-galactic nebulae" appeared in January, 1929.
   Figure: PNAS March 15, 1929 vol. 15 no. 3 168-173