Physics A-Level
Interstellar distance scales
What Interstellar distance scales means in Physics A-Level, as defined for OCR.
Definition of Interstellar distance scales
Check what you remember
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Reference: OCR
Both units are used for interstellar distances, with parsecs common in professional astronomy and light-years common in popular science.
Topics that use Interstellar distance scales
- 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 Interstellar distance scales in the exam
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