Expansion of space-time
What Expansion of space-time means in Physics A-Level, as defined for OCR.
Definitions of Expansion of space-time
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Reference: OCR
Space-time began to expand immediately after the Big Bang and continues to expand today, so the space between galaxies stretches.
Space-time itself expands, carrying galaxies apart, rather than matter exploding into pre-existing space.
Topics that use Expansion of space-time
- 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 Expansion of space-time in the exam
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