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Vesto Melvin Slipher ( / ˈslaɪfər /; November 11, 1875 – November 8, 1969) was an American astronomer who performed the first measurements of radial velocities for galaxies. He was the first to discover that distant galaxies are redshifted, thus providing the first empirical basis for the expansion of the universe.
Vesto Slipher was an American astronomer whose systematic observations (1912–25) of the extraordinary radial velocities of spiral galaxies provided the first evidence supporting the expanding-universe theory.
- The Editors of Encyclopaedia Britannica
Vesto Melvin Slipher was a pioneer of spectroscopic astronomy who discovered the radial velocities of spiral nebulae and the rotation of planets. He also directed the Lowell Observatory and received several awards, including the Bruce Medal in 1935.
Vesto Slipher. Vesto Melvin Slipher (1875 - 1969) History. This page is motivated by a feeling I have held for some years: that a very large share of the credit for the discovery of the expanding universe is due to Slipher, and yet he tends to take very much second place to Hubble in most accounts.
Sep 1, 2021 · Learn about Vesto Slipher, an Indiana-born astronomer who developed spectrographic methods to measure the expansion of the universe. Discover his contributions to the Big Bang theory, his research on Mars and Andromeda, and his legacy at Lowell Observatory.
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May 29, 2018 · SLIPHER, VESTO MELVIN (b. Mulberry, Indiana, 11 November 1875; d. Flagstaff, Arizona, 8 November 1969) astronomy. Slipher, a son of David Clarke and Hannah App Slipher, perfected techniques in spectroscopy and achieved great advances in galactic astronomy.