How do Galaxies collide?

Question

If the universe is expanding and all the Galaxies are flying away from one another at an ever increasing speed, how can they collide. Yet we see It!

Answer 1

There are many instances where galaxies appear to be interacting with each other enough to cause obvious distortions of the galaxies that interact. These interactions may have a significant connections with the manner in which galaxies evolve with time. The ring is a wave of star formation traveling outwards at about 200,000 miles per hour that would not be there if the galaxy had not collided with another. It is a ripple of energy deposited in the center of the galaxy by the passage of another galaxy of the group through it. As the wave passes outward it compresses and heats the matter that it passes through, triggering the star formation.

Answer 2

Only Galaxies outside their local group fly away from each other. Others dont and they are attracted through the force of gravity. an ex. is that the andromeda galaxy is going to collide with the milky way galaxy in 350 million years

Answer 3

Ok, for example, an infinite number of galaxies expanding from a Universal central point. A faster moving galaxy comes closer to a slower moving one. The gravitational pulls of both of them draw them even closer, until they crash into each other. If you think of it this way, galaxies colliding makes sense, despite current cosmic theories.

Answer 4

Galaxies often crash into one another. Even our own galaxy has had others pass right through it. Don't worry though, galaxies can pass through each other quite safely. Stars are so far apart that the chances of two colliding is very unlikely

http://www.kidsastronomy.com/galaxys.htm

Answer 5

On average, al the galaxies are moving away from each other.

But some galaxies may be moving towards each other, and some moving away from each other faster than the average.

It's like on a motorway - on average, all the cars are going at 0mph - because half are going one way at between 0-100mph, and half are going the other way.

Galaxies have the velocity they gained when they were 'born', plus velocities gained from collisions, from flying past other galaxies...

Answer 6

Very messily.

Because they are still moving and rotating. They are not shooting straight out out from a central point, but spinning and churning and spiralling.

Answer 7

Cos god is a woman and controls evryhting - u ever seen a woman drive ffs??????????

Answer 8

stacked to close on the shelf