Podcaster: Steve Nerlich
Title: Cheap Astronomy – Fantastic Physics Formulas – Episode 9: Expanding and also Lifting
Organization: Cheap Astronomy
Links: http://cheapastro.com
Description: Cheap Astronomy tries expanding and also lifting.
The Hubble – Lemaitre Law: v=H0D
V (Velocity) equals D (distance) times H-nought (the Hubble-Lemaitre constant).
This formula describes the relationship between the distance of galaxies and the velocity at which they are receding from us. Put simply it says the farther away a galaxy is, the faster it is receding.
This relationship has been widely accepted as evidence that the Universe must be expanding, with the notable exception of Edwin Hubble who was happy there was a relationship between the redshift of galaxies and their distance, but never really accepted it as evidence that the whole Universe was expanding.
Bio: Cheap Astronomy offers an educational website where you’re only as cheap as the telescope you’re looking through.
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365 Days of Astronomy
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