Cosmic Exploration · discovery
Galaxy Redshifts
1917 · Vesto Slipher
- Year
- 1917
Description
Slipher measured the spectra of spiral nebulae and found almost all of them shifted to the red. He had the expansion of the universe in hand a decade before anyone could interpret it.
Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.