Astronomer (1889–1953) regarded as one of the most important observational cosmologists of the 20th century and the namesake of the orbiting Hubble Telescope. Ink signature, “Edwin Hubble, Mt. Wilson Observatory, Pasadena, California, USA,” on an off-white 4 x 2.5 slip clipped from a tailor’s guestbook. Encapsulated in a plastic PSA/DNA authentication holder. In fine condition, with toning to the left edge. The guestbook this was removed from was compiled between May 1912 through September 1933, and was attributed to Savile Row, the London area renowned for bespoke tailoring of men’s suits. Hubble first began working at Mount Wilson in 1919, and just three years after his arrival—using the observatory’s newly completed Hooker Telescope—identified nebulae far too distant to be part of the Milky Way, as previously believed. Formally presenting his findings in 1925, Hubbel fundamentally changed the scientific view of the universe with his expanding universe theory. A rare and much sought-after autograph by one of 20th-century science’s household names, highlighted by the addition of the observatory he made famous.
Edwin Hubble Exceedingly Rare Signature