Hubble’s Law (AQA A-Level Physics): Flashcards

Recessional velocity $\propto$ distance from Earth

$v = H \cdot d$

Approx. 65 km/s/Mpc

$t = \frac{1}{H}$

Approx. 15 billion years

Singularity - extremely small and hot point

Cosmic Microwave Background Radiation - leftover energy from Big Bang detected in all directions

Approx. 73%

Approx. 25%

Universe expanding from single starting point