The Universe Flashcards by Keyaan Chughtai | Brainscape

Q

What is the equation for

Hubble’s Constant

A

v = H0 d

v = recessional velocity, d = distance

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Q

Gaia Value for Hubble’s Constant

A

72.1 ± 2.0

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Q

What is equation for

Age of universe

A

H0 ^-1

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Q

What is equation for

Red Shift

A

1 + z = λ / λ0

λ = apparent wavelength, λ0 = rest wavelength, z = redshift

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Q

What is the equation for

Critical Density

A

ρ = (3H0^2)/8πG

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