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Whose telescope data first revealed that the universe is expanding?
Quick Answer
Edwin Hubble’s. His galaxy observations in the 1920s showed recession velocities increasing with distance.
The Full Story
Edwin Hubble’s observations of galaxies, especially with the 100-inch Hooker Telescope at Mount Wilson, transformed cosmology. In the 1920s he measured distances to nebulae now known as galaxies and compared them with their redshifts. The pattern showed that galaxies farther away are moving away faster. This observational breakthrough established the expanding-universe picture.
Key Facts
1.Used the 100-inch Hooker Telescope
2.Major results published in 1929
3.Galaxies beyond the Milky Way were confirmed
YouTube Angle
Suggested video title for this topic:
"The telescope that proved the universe is not static"
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