Physics A-Level
Stellar parallax
What Stellar parallax means in Physics A-Level, as defined for OCR.
Definition of Stellar parallax
Check what you remember
Read the wording for your board, then hide it and explain Stellar parallax in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The apparent shift in a nearby star's position against more distant background stars as the Earth moves from one side of its orbit to the other.
Topics that use Stellar parallax
- 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 Stellar parallax in the exam
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