Andromeda Is a Galaxy

1924 · Edwin Hubble

Description

A Cepheid in M31 put it a million light-years away — far outside the Milky Way. The universe went from one galaxy to countless in a single plate.

observatory

researcher

Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.

From the Discoveries database in Notion, last edited 2026-08-15. This page is the row, rendered by the build; nothing on it is written by hand.