⏰ when
When was the cosmic microwave background first detected?
Quick Answer
It was first detected in 1965 by Arno Penzias and Robert Wilson.
The Full Story
Arno Penzias and Robert Wilson found the cosmic microwave background in 1965 while working at Bell Labs in New Jersey. They were trying to eliminate a persistent radio noise in their antenna and eventually realized it was coming from all directions in space. The signal was interpreted as leftover radiation from the early universe, about 380,000 years after the Big Bang. This was one of the most important pieces of evidence supporting the Big Bang theory.
Key Facts
1.Detected in 1965
2.Found by Arno Penzias and Robert Wilson
3.CMB temperature is about 2.7 kelvin
YouTube Angle
Suggested video title for this topic:
"The accidental discovery that revealed the universe’s baby picture."
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