Multiple choice general knowledge science & technology

The expansion of The Universe was discovered by observing that all galaxies are moving away from us. Who made this discovery

  1. Edwin Hubble

  2. Albert Einstein

  3. Fritz Zwicky

  4. Johannes Kepler
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A Correct answer
Explanation

Edwin Hubble discovered cosmic expansion in 1929 by observing that distant galaxies are moving away from us, with more distant galaxies receding faster (Hubble's Law). This was the first evidence that the universe is expanding.

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