What happens when galaxis colide?

Answer 1

When galaxies collide, they don't actually smash into each other; they swirl around each other and eventually become a single galaxy.

Galaxies collide very often, although they take millions of years to do so. In fact now scientists believe that collisions and merges between multiple galaxies make up some of the main elements causing evolution as time passes.

Most galaxies in the universe are made of two or more other galaxies that have collided together.

A galaxy is made of about 40 to 250 billion stars, although our galaxy, the Milky Way, has many more. So you might think that during a collision, numerous collisions will occur between a galaxy's stars, right? But actually the chance of any two stars colliding in the entire two galaxies is almost a straight zero. This is because even though, as I said, there are hundreds of billions of stars in a galaxy, about 99.9995% of material that makes up a galaxy is not made up of stars. That gives you another really big hint of about how big the universe really is.

However, this seems false when colliding galaxies are observed through a telescope. This is because the 99.9995% of space in a galaxy not consisting of stars consist of gases and dust. When the galaxies collide, this material will do so by gravity, the same way we get pulled down to Earth. There also is lots of friction in both of the colliding galaxies, causing shock waves that can trigger star formation in the galaxies that make the collision look astonishing.

These processes can radically affect the galaxies. For example, two spiral galaxies, like our home galaxy-The Milky Way-- can collide to form an elliptical galaxy. As I said, it takes millions of years for galaxies to collide, but that's really short when it comes to astronomy! For More, copy and paste this in the web address bar: http://curious.astro.cornell.edu/question.php?number=351

Answer 2

when 2 the galaxy's collide every thing in it has 2 directions to go one is instant death and another one is suffering death if the earth gos to the center of the galaxy's there are multiple explosions in there and if the earth gos the other way we might be Lucky and go to another orbit with a sun and be in the right distance to stay alive but if not we will die slowly our food will desapear slowly.

Answer 3

As a galaxy, like everything, is mostly nothing, not much. Actual collisions are eminent, but are not the norm. A lot of gravitational flinging goes on, and eventually the two galaxies coalesce into one slightly smaller than the mass total of the two individuals (some "stuff" if invariably flung into intergalactic space).

Answer 4

they ripe each other because of the gravity.

Answer 5

we will die.