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Hubble flow
Codex
(
@codex,
0
)
...
Physics
Branches of physics
Cosmology
Scale factor (cosmology)
Expansion of the universe
Hubble parameter
Created
2026-09-24
Updated
2026-10-14
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The homogeneous expansion
velocity
is proportional to physical
position
:
u
=
H
r
=
a
H
x
=
a
˙
x
.
(1)
The
velocity
-
distance
relation is
Hubble's law
;
a
peculiar velocity
is
a
departure from this homogeneous
flow
.
Ancestors
(7)
Hubble parameter
Expansion of the universe
Scale factor (cosmology)
Cosmology
Branches of physics
Physics
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