Question:
In what direction are the galaxies moving?
hector
2011-08-28 14:00:11 UTC
Physical Science is killing my kid! so here's his question: In what direction are the galaxies moving?
Ten answers:
2011-08-28 16:20:58 UTC
Left.



This is a nonsensical answer to a nonsensical question.
?
2011-08-28 14:58:50 UTC
Here goes,-before the big bang there was NOTHING- no over here or

over there, nothing, not even space itself. So, when the big bang happened,

everything was created EVERYWHERE at the same time, so there is/was no center

to the universe-it was everywhere at once.So,like all explosions, everything was

flying outward,away from everything else, in all directions, creating SPACE itself

as it expanded. Because of gravity, some matter drew together into clumps which

became stars,planets, galaxies,clusters of galaxies etc,, but at the same time, they were

still expanding outward away from each other in every direction and are still doing so

to this very day....So to answer your question the galaxies are moving, either in clusters.

or separately, away from each other in all directions at all times.

UYYU:)
?
2011-08-28 14:38:21 UTC
*Which* galaxies?



There are there bases of reference from which you could define their movement.



First, the Milky Way and Andromeda are moving towards each other.



Second, the Milky Way and a galaxy, say, a billion light-years away, in another gravitationally-bound group, might be moving *towards* each other, or they might be moving *away* from each other, but in either case, the distance between them is increasing because of the expansion of the universe.



Imagine that there are two or three dozen people standing in a circle in New York, and another group of people in Boston, and another in Los Angeles. All the people in each circle are facing inwards and slowly walking towards each other. At the same time, however, the surface of the Earth is growing larger. Now, while there may be people in all three groups walking towards the east, whether the distance between them is increasing or decreasing is based on their movement relative to their circle in comparison to the circles' movement relative to each other. So, the people moving east in the New York circle and the people moving east in the Boston circle might be getting *closer*, while the people moving east in the New York circle and the people moving east in the Los Angeles circle might be getting *farther* from each other, simply because the people's movement within the circle is fast enough to compensate for the movement of the circles away from each other.



This is just an analogy to demonstrate the fundamental concepts of relative movement. In the universe, other than the *most* nearby galaxies, almost *all* galaxies are becoming more distant, even if two galaxies are moving in the same direction.
2011-08-28 14:33:47 UTC
Each galaxy's moving in a direction.
finn24
2011-08-28 14:36:10 UTC
The galaxies are moving apart from each other and at the same time moving further & further out into space where they will eventually come to an end in a cosmic big bang. Then after a very very long time bits & pieces that are floating around in the wilderness will start coming together again then....who knows ?
2011-08-28 14:09:13 UTC
there is NO FIXED CENTER OF ANYTHING

To say how are things moving you ave to define : compared to what?



to say the universe is expanding is to say the entire 3-d universe is like the skin 2-D of a balloon. if the rubber (the space time itself stretches all the dots on the balloon move apart



but if the dots are "sliding around on the surface" pulled by the force of gravity of nearby dots

you have to say which dot is "standing still"



we have "local galaxies" which are moving toward each other.



all very distant galaxies seem to bee moving away form us



Hubble the astronomer, ( named after a famous space telescope to be built 50 years after his discovery) discovered this in about 1920.



it was part of einstein's general theory of relativity math in 1905 but einstein did not want to believe it.
2011-08-28 14:10:36 UTC
According to expansion theory, they are moving away from the origin of the big bang, so each galaxy is moving in a different direction but away from the cosmic "center"
campbelp2002
2011-08-28 14:52:04 UTC
Due to the expansion of the universe galaxies are (almost) all moving away from each other. That looks like they are all moving away from you no matter where you are located.
s
2011-08-28 14:56:35 UTC
Galaxies are moving in every direction away from us, the farther away from us the faster they move away.
b.ahmed
2011-08-28 14:12:57 UTC
All Distant Galaxies seems to be moving away from each other . Further they are Faster they move away from each other.


This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.
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