How everything began

Chapter 1

The first second of existence

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Chapter 2

The light that remains

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Chapter 3

Building the first atoms

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Chapter 4

From darkness to first stars

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YOUR GOAL

Master of How everything began

Ch 3 · Building the first atoms

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artiteacher How hydrogen became the parent of all elements

Jul 12

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artiteacher The cosmic kitchen cooks light elements

Jul 12

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artiteacher Entering the long cosmic dark ages

Jul 12

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artiteacher The mystery of the missing lithium

Jul 12

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artiteacher 4. **Selecting and Refining the Best Option:** *

Jul 10

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artiteacher Building the first atoms

The hydrogen inside the water that you drink Was made before the stars could even start to blink.

Jul 10

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artiteacher Entering the long cosmic dark ages

Jul 10

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Fun Fact

Primordial hydrogen: Every single hydrogen atom in your body's water molecules was created during the Big Bang, making you 13.8 billion years old.

Jul 10

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artiteacher The mystery of the missing lithium

Jul 10

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Glossary

recombination (noun)
The process of combining or joining together again to form new combinations. About 380,000 years after the Big Bang, this process produced the universe's first neutral hydrogen.