Thanks for the very good question you asked. I
hope you love astronomy and will study hard and
someday become an astronomer.
amazing as this will sound, if you were living on
a planet within a galaxy that was undergoing
merger with yet another galaxy what you would see
on Earth is...NOTHING UNUSUAL!!!!!!!!!
can this be??? It does not seem to make sense with
the idea of colliding galaxies does it? This seems
like a PARADOX (look up this word!!).How is this
Well, it gets right to the
matter of the DISTANCES between stars... the
average distance between stars in the MILKY way
Galaxy is 30,000,000,000,000 miles!!!!THIS IS THE
distance to the closest star to the sun; its name
is PROXIMA CENTAURI.
This is a HUGE distance
to the nearest star... so even if another galaxy
was superimposed or "colliding" with the Milky
Way, the average distance between the stars would
still be HUGE...that is, if there were twice as
many stars in the Milky way the average distance
would be half as much or 15,000,000,000,000 miles
so you can see THAT is a very long way. The
distance between Earth and sun is only 93,000,000
So what one would see mainly due to
galactic merger is that instead of seeing about
3000 stars on a CLEAR night far away from city
lights, maybe you would be able to see with the
naked eye about 6000 stars... you would see a few
more stars ... but thats about it... there would
be no great explosions.
I hope this helps.
You are not too young to find a good astronomy
book and start learning more about this business.
I hope my answer makes sense to you.