Relevant Scales

Distances measured in Mpc [megaparsec]

1 Mpc = 3 x 1024 cm

5 Mpc = distance between galaxies

3000 Mpc = scale of the Universe

if ?  Mpc

fluctuations have a PRIMORDIAL shape

if ?  Mpc gravity creates sharp features, like walls, filaments and voids

Biasing

conversion of mass into light is nonlinear

light is much more clumpy than the mass

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