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Questions and Answers
What was the key observation Edwin Hubble made that led to the conclusion that the Universe is expanding?
What theory was reinforced by Hubble's discovery of the expanding Universe?
What is the relationship between the velocity of recession and distance according to Hubble's discovery?
What was the significance of Hubble's discovery in the context of astronomy?
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What has been the outcome of numerous and repeated measurements since Hubble's time?
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Study Notes
The Expanding Universe
- In the late 1920s, American astronomer Edwin Hubble made a significant discovery that changed our understanding of the universe.
- Hubble observed that distant stars and galaxies are moving away from Earth in all directions.
- The velocity of recession increases in proportion to the distance from Earth, a concept that has been consistently supported by numerous measurements since Hubble's time.
- Hubble's findings imply that the universe is expanding, which is a key prediction of Einstein's Theory of General Relativity.
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Description
Learn about Edwin Hubble's discovery of the expanding universe, where distant stars and galaxies are receding from Earth in every direction.
