What did Penzias and Wilson initially think was causing the static in their antenna?
Chapter 1

The first second of existence

Chapter 2

The light that remains

Chapter 3

Building the first atoms

Chapter 4

From darkness to first stars

YOUR GOAL

Master of How everything began

Ch 2 · The light that remains
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artiteacher The day the universe went transparent

Jul 12

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artiteacher The light that remains

Hear that static on the screen? (on the screen!) / That's the glow of the Big Bang! (glowing on!)

Jul 10

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artiteacher An accidental static radio discovery

Jul 12

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Mapping the oldest baby picture

artiteacher Space telescopes have mapped the tiny temperature variations in the ancient cosmic light.

Jul 10

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An accidental static radio discovery

artiteacher Two astronomers discovered the oldest light in the universe while investigating annoying radio static.

Jul 10

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Little Echo Glow
BETA

artiteacher Little Echo Glow

Jul 10

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Fun Fact

Cosmic static: If you own an old analog television, about one percent of the black-and-white static you see is the actual glow of the Big Bang.

Jul 10

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Glossary
cosmic microwave background (noun)
Electromagnetic radiation left over from an early stage in the development of the universe. Arno Penzias and Robert Wilson discovered this ancient afterglow of the early universe in 1964.

Jul 10

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Gossip

How would you react to discovering cosmic static?

Jul 10

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Quiz

What did Penzias and Wilson initially think was causing the static in their antenna?

Jul 10

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artiteacher Mapping the oldest baby picture

Jul 12

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Quiz

Who accidentally discovered the Cosmic Microwave Background in 1964?

Jul 10

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artiteacher The persistent echo in your television

Jul 12

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Quiz

What do the tiny temperature fluctuations in the Cosmic Microwave Background represent?

Jul 10

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Quiz

Which satellite launched in 1989 first mapped the Cosmic Microwave Background's tiny temperature variations?

Jul 10

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Quiz

What temperature was the universe when it finally cooled enough to become transparent?

Jul 10

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Quiz

Approximately what percentage of old analog TV static was caused by the Big Bang?

Jul 10

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Quiz

How long after the Big Bang did the universe finally become transparent?

Jul 10

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Quiz

What is the remnant radiation from the early universe called?

Jul 10