The CMB power spectrum reveals the universe's age, composition, and geometry
Image: David (Deddy) Dayag, CC BY-SA 4.0, via Wikimedia Commons
The CMB power spectrum reveals the universe's age, composition, and geometry
Cosmic inflation
Cosmic inflation explains the universe's uniform temperature
Friedmann equations
Friedmann equations govern cosmic expansion in homogeneous and isotropic models
Symmetry (physics)
Symmetry leads to energy conservation
Time dilation
Clocks run slower in stronger gravitational fields
Renormalization group
Renormalization group (RG) explains physics changes with observation scale
Riemannian geometry
Riemannian geometry is essential for understanding curved spacetime
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