- In
standard cosmology,
comoving distance and
proper distance (or
physical distance) are two
closely related distance measures used by
cosmologists to define...
-
signals emitted since recombination.
According to calculations, the
current comoving distance to
particles from
which the
cosmic microwave background radiation...
-
directly observable, but is more
convenient for
calculations (such as the
comoving coordinates of the quasar, galaxy, etc.). The
distance measures discussed...
- universe, with no
other motion, then it
remains stationary in
comoving coordinates. The
comoving coordinates are the
spatial coordinates in the FLRW metric...
- A
proper frame, or
comoving frame, is a
frame of
reference that is
attached to an object. The
object in this
frame is
stationary within the frame, which...
- the
constellations Canes Venatici and Coma Berenices, with the
projected comoving distance of
approximately 18.2
billion light-years from Earth. It possesses...
-
elegant and
intuitive explanation of the Michelson–Morley null result. In a
comoving frame the null
result is self-evident,
since the
apparatus can be considered...
- \theta } , the
comoving distance between them
would be D M δ θ {\displaystyle D_{M}\delta \theta } . In a
spatially flat universe, the
comoving transverse...
-
Space Telescope, it is the
earliest and most
distant known star, at a
comoving distance of 28
billion light-years (8.6
billion p****cs). The previous...
- "proper distance" D to a
galaxy (which can
change over time,
unlike the
comoving distance) and its
speed of
separation v, i.e. the
derivative of proper...
