I am sure you know
how vast our galaxy is and also the galaxy of galaxies.
Not exact matches
You have to ask yourself
how all that
vast apparent space, billions of light - years between
galaxies, is fill up, is a plenum.
If the
galaxy is 2 million light - years away, then we are viewing it as it was 2 million years ago because that is
how long the light traveled, undisturbed through
vast stretches of empty space, before it reached us.
Simulations of
how large - scale cosmic structures form suggest that
galaxies are connected by a
vast network of dark matter, the evasive substance that makes up most of the universe's matter but interacts with regular matter only via gravity (SN Online: 10/11/17).
Simulations of
how cosmic structures form suggest that most
galaxies clump along dense filaments of dark matter, which are separated by
vast cosmic voids.
The first KiDS results show
how the characteristics of the observed
galaxies are determined by the invisible
vast clumps of dark matter surrounding them.
In the current narrative of
how galaxies like our own Milky Way formed, cosmologists postulate they were once fed from a
vast reservoir of pristine hydrogen in the intergalactic medium, which permeates the
vast expanses between
galaxies.