👤 whose
Whose measurements first estimated the age of the universe from the Hubble expansion?
Quick Answer
Lemaître was among the first to connect expansion with a finite cosmic age. His early estimates were much rougher than today’s 13.8 billion years.
The Full Story
Georges Lemaître reasoned that if galaxies are moving apart, the universe must have been denser in the past and therefore cannot be infinitely old. Using early expansion estimates, he produced one of the first age calculations for the universe. His number was far from the modern value because the original distance and velocity measurements were crude. Still, his approach showed how cosmic expansion could be used to infer the universe’s history.
Key Facts
1.Early 20th-century calculation
2.Used galaxy recession to infer age
3.Modern age is about 13.8 billion years
YouTube Angle
Suggested video title for this topic:
"How astronomers first tried to date the universe"
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