👤 whose
Whose discovery revealed the expanding universe?
SpaceAstronomy
Quick Answer
Edwin Hubble showed in the 1920s that galaxies are moving away from us, evidence that the universe is expanding. He built on earlier redshift work by Vesto Slipher and others.
The Full Story
Edwin Hubble used observations from the Mount Wilson Observatory to show that many nebulae were actually galaxies outside the Milky Way. In 1929 he published the relationship now called Hubble’s law, linking distance with the speed at which galaxies recede. This provided strong evidence that the universe is expanding. The discovery transformed cosmology and laid groundwork for the Big Bang model.
Key Facts
1.Hubble’s key paper appeared in 1929
2.He showed galaxies are outside the Milky Way
3.The result supported an expanding universe
YouTube Angle
Suggested video title for this topic:
"The discovery that revealed the universe is stretching"