⏰ when
When was the first accurate measurement of the universe’s expansion made?
Quick Answer
In 1929, Edwin Hubble published evidence that distant galaxies are receding, showing the universe is expanding.
The Full Story
In 1929, Edwin Hubble published the relationship now known as Hubble’s law, showing that galaxies farther away generally move away faster. This was the first strong evidence that the universe is expanding. Hubble’s work built on earlier galaxy distance measurements and redshift observations. The discovery transformed cosmology and laid the groundwork for the modern Big Bang model.
Key Facts
1.Published in 1929
2.Known as Hubble’s law
3.Based on galaxy redshifts
YouTube Angle
Suggested video title for this topic:
"The discovery that the universe is stretching."
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