Physics A-Level
Astronomical unit (AU)
What Astronomical unit (AU) means in Physics A-Level, as defined for OCR.
Definition of Astronomical unit (AU)
Check what you remember
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Reference: OCR
The average Earth–Sun distance, about 1.50 × 10¹¹ m, convenient for distances within the Solar System.
Topics that use Astronomical unit (AU)
- 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 Astronomical unit (AU) in the exam
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