What Actually Expands In An Expanding Universe?

As the universe expands, #expanding #space is said to "stretch" photons. But if it stretches photons, does it also stretch molecules, galaxies and you? Go to to learn more. Special thanks to Geraint Lewis - this video was based on his paper "On...

12 min - Space & the Universe - Veritasium

More: The Big Bang & Cosmology documentaries

Read Deeper: The Big Bang & Cosmology

1. The First Three Minutes by Steven Weinberg (4.1/5) - View on Amazon
2. A Universe from Nothing by Lawrence Maxwell Krauss (3.4/5) - View on Amazon
3. Big Bang by Simon Singh (3.7/5) - View on Amazon
4. The Big Picture by Sean M. Carroll (3.9/5) - View on Amazon
5. A Brief History of Time by Stephen Hawking (4.2/5) - View on Amazon

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