How the stretching of light reveals our expanding universe
In short: This video explains the fundamental cosmological concept of redshift, a phenomenon where light from distant objects shifts toward longer wavelengths as it travels through space.
The video explores how redshift serves as a primary tool for astronomers to measure the movement and distance of celestial bodies. By observing how light stretches, scientists can determine how the universe is expanding and gain insights into its history and composition.
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- Summary by Intellect · source: What is REDSHIFT?
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