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Explain redshift as the increase in the wavelength of electromagnetic radiation from stars and galaxies that are moving away from us.

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Cambridge IGCSE PhysicsSpace physicsCore content

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Explain redshift as the increase in the wavelength of electromagnetic radiation from stars and galaxies that are moving away from us

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  • You need to be able to explain redshift as the increase in the wavelength of electromagnetic radiation from stars and galaxies that are moving away from us.
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Describe

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Description

Redshift and Galaxy Movement

Astronomers have observed that light from galaxies shows a redshift, indicating they are moving away from Earth. This phenomenon is used to understand the expansion of the universe.

  1. a

    State What does redshift indicate about the movement of galaxies?

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