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Whose observations first showed that the universe is expanding?
ScienceAstronomy
Quick Answer
Edwin Hubble provided the key evidence that the universe is expanding. In 1929, he found that distant galaxies are moving away from us.
The Full Story
Edwin Hubble is credited with demonstrating that the universe is expanding. In 1929, he published evidence showing that the farther away a galaxy is, the faster it appears to be receding. This relationship is now called Hubble's law. His work transformed astronomy by showing that the Milky Way is just one galaxy among many and that the cosmos is dynamic rather than static.
Key Facts
1.Hubble's key paper was published in 1929
2.Hubble's law relates distance and recession speed
3.The universe is not static
YouTube Angle
Suggested video title for this topic:
"A simple pattern in galaxy speeds changed our view of the universe."