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In all probability nothing at all.
In about 5 billion years the Andromeda Galaxy will merge with our Milky Way Galaxy (note the word merge, they merge not collide).
The distances between stars and planets is so great that in most cases, the merge will happen without any major changes. This is not to say that nothing will happen. Gravitational interactions between close stars could have a catastrophic effect on any planetary system.
However, as said before the chances are slim. It's like shooting a shotgun at an object 1 mile away and hoping to hit it with just one pellet.
What else can I help you with?
What will happen to are earth in a black hole?
Should Earth ever collide with a black hole, it would get destroyed.
What happens when stars calide?
When stars collide they connect their galaxies and explode.If our earth was at the far end of the explosion we would survive but if we were in the middle the explosion would be too intense for anyone to survive.
What happens if 10 galaxies collide into each other at the same timeHow big would the supernova be?
When galaxies "collide", the individual stars do not actually smash together; they're far enough apart that they mostly slip past each other.
What would happen if the Earth intersected a Lagrange point of two massive intergalactic stars?
This could not happen because the Earth is located within the Milky Way galaxy. Intergalactic stars are located outside of Galaxies.
What would happen if a neutron star collided with earth?
It is extremely unlikely that a neutron star (or any star or planet) will collide with the Earth, so this is not something that you need to worry about, however, if a neutron star were to collide with the Earth, the Earth would be captured by the intense gravitational field of the neutron star, and would be absorbed by the star. Under sufficient pressure, electrons and protons will merge to form neutrons, and so the atomic matter of which the Earth is composed can be converted into pure neutrons.
What could happen two plates collide?
If two plates were to collide they would either go up over the surface and form a volcano, or they would collide and go downward forming a trench or a large crevice.
Where do many earthquakes happen in a country?
it happens when the tectonic plates under the earth collide or push into each other to cause disruption so an earthquake would happen in a place were there is the edge of 2 tectonic plates underneath.
How can a cosmic impact affect life on the earth?
A cosmic impact is an explosion that occurs in space when two objects collide. It is quite possible that asteroids and other debris in outer space would collide with each other from time to time.
What would happen if the moon fell out of orbit?
If the moon fell out of orbit, it would either crash into Earth or be slingshotted away into space, depending on the angle and speed of its descent. Either scenario would have catastrophic consequences for both the Earth's environment and life forms.
What if the earth will stop revolving around the sun?
The earth would be attracted by the sun, and as it came closer the sun, the earth would melt. The earth would probably collide with the sun before or after it would melt.
How would other galaxies appear to move relative to Earth if the universe were shrinking?
If the Universe was shrinking the galaxies would appear to be moving towards the Earth, and look more blue than they should. This is the opposite to the universe expanding where galaxies would appear to be moving away from the Earth, which we know due to "red shift". Andromeda would be the exception since it's directly moving towards the Milky Way.
What would happen to the Moon and Earth if the Sun did not exist?
If there were no gravitational pull from the Sun, Earth would continue its motion in a forward direction. It would not orbit around the Sun. There would be no day and night. There would be no seasonal changes. It would probably collide with other objects in space. It would also not be able to maintain the Moon’s orbit.
