Physics GCSE
accelerating expansion
What accelerating expansion means in Physics GCSE, as defined for AQA.
Definition of accelerating expansion
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Reference: AQA
The conclusion that the expansion of the universe is not slowing but accelerating, so distant galaxies are receding ever faster.
Topics that use accelerating expansion
- Red-shift (physics only) (AQA GCSE)
Related terms
- absorption line spectra
- dark energy
- dark mass and dark energy
- expanding universe
- increase in wavelength
- measuring distance
- receding galaxies
- red end of the spectrum
Using accelerating expansion in the exam
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