One hundred years ago, Edwin Hubble took a series of photos of the Andromeda Galaxy, ultimately changing our perception of the universe. Within its spiral arms, a Cepheid variable star, combined with a spectral measurement called redshift, opened up the possibility that not only was the galaxy outside our own but in a universe magnitudes larger than predicted by astronomers. The thousands of glass negatives at Carnegie Observatory in California attest to his careful work, later published in 1929. Notations by Hubble are clearly marked on the negatives. This image was scanned from a film copy of a glass plate taken in October 1923 later carelessly stapled in the corner but strangely looking like an open door. I saw these historic plates during a visit to the Observatory archives in 2022.  Image area 33.5 x 28cm on Somerset 100% cotton paper each screen print varies slightly in the re/blue colour blend. Edition of 5.