Physics A-Level
Hubble's law and recession of galaxies
What Hubble's law and recession of galaxies means in Physics A-Level, as defined for OCR.
Definition of Hubble's law and recession of galaxies
Check what you remember
Read the wording for your board, then hide it and explain Hubble's law and recession of galaxies in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Distant galaxies recede faster because the space between them stretches, so more distant galaxies have greater recession speeds.
Topics that use Hubble's law and recession of galaxies
- Cosmology (OCR A-Level)
Related terms
- Age of the universe
- Astronomical distance units
- Baseline
- Big Bang nucleosynthesis
- Big Bang theory
- Cosmic microwave background
- Cosmic microwave background radiation
- Cosmological redshift
Using Hubble's law and recession of galaxies in the exam
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