description Vesto Slipher Overview
Vesto Slipher was an American astronomer who measured spiral nebula redshifts from 1912, evidence later central to cosmic expansion.
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What specific nebula did Vesto Slipher measure in 1912?
In 1912, Vesto Slipher observed the Andromeda Nebula, which was not yet known to be a separate galaxy, and measured its radial velocity. He discovered it was moving toward the Earth at an astonishing rate of 300 kilometers per second.
Where did Vesto Slipher conduct most of his astronomical research?
Slipher spent nearly his entire career at the Lowell Observatory in Flagstaff, Arizona. He used the observatory's 24-inch Alvan Clark refracting telescope to capture the light spectra of distant celestial bodies.
How did Vesto Slipher's work influence Edwin Hubble?
Slipher's measurements of the redshifts of numerous spiral nebulae proved they were moving away from the Earth at high speeds. Edwin Hubble later combined Slipher's redshift velocity data with his own distance measurements to formulate Hubble's Law of cosmic expansion in 1929.
Did Vesto Slipher win the Nobel Prize for his astronomical discoveries?
No, Slipher never won a Nobel Prize, largely because there was no specific Nobel category for astronomy during his peak years. However, he was awarded the Gold Medal of the Royal Astronomical Society in 1933 for his foundational redshift discoveries.
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