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Inspired by yesterdays NASA threads

S

Syrch

Diamond Member
I was looking at the picture links from yesterdays nasa links and found this pic which is two galaxies colliding. Made me wonder what would happen if our galaxy (the milky way) collided with another. Is it as desctrutive as it sounds? Or do the planets of the two join the stronger galaxies gravitational pull?

Food for thought i suppose but got me thinking.
 
The black holes would probably wreak some havoc on us planets, but I assume it would reach some sort of equilibrium eventually.
 
There was another picture some time back of one galaxy actually devouring another, you could see light from the smaller one bending into the larger.
 
Originally posted by: Syrch
so am I to assume that the planets of both galaxies get destroyed?
Click to expand...


I would assume so from common sense thought, but have no scientific explanation what so ever.

Anyone know? Could a planet survive that?
 
yes common sense..or the knowledge i have from looking online tells me that the planets would just either desolve into nothing or explode....would love some strong scientific facts on this though.
 
Originally posted by: KillyKillall
Originally posted by: Syrch
so am I to assume that the planets of both galaxies get destroyed?
Click to expand...


I would assume so from common sense thought, but have no scientific explanation what so ever.

Anyone know? Could a planet survive that?
Click to expand...
Even though they look dense, galaxies are actually very spread out. Most systems are unaffected as the two mega-bodies pass through each other.
 
Originally posted by: Syrch
yes common sense..or the knowledge i have from looking online tells me that the planets would just either desolve into nothing or explode....would love some strong scientific facts on this though.
Click to expand...
This isn't what happens with astronomical collisions... even if two, let's say planets, collide, they generally just form a larger body that eventually becomes a sphere under its own gravity. Of course, it depends on the force and angle of the impact.
 
Originally posted by: hjo3
Originally posted by: KillyKillall
Originally posted by: Syrch
so am I to assume that the planets of both galaxies get destroyed?
Click to expand...


I would assume so from common sense thought, but have no scientific explanation what so ever.

Anyone know? Could a planet survive that?
Click to expand...
Even though they look dense, galaxies are actually very spread out. Most systems are unaffected as the two mega-bodies pass through each other.
Click to expand...

while they are very dense wouldnt the "impact" cause such reactions that should destroy life on any planet? it would throw that planet into kaos. just a slight tilt in the axis would cause major climate changes.
 
I would think that some planets/orbiting bodies would get caught up in the mess considering the number of them in a galaxy, but chances are that most would pass right by eachother. Alot of orbits would probaly become very screwy though.
 
Didn't you people read the caption? "When galaxies collide they pass through each other, their individual stars do not come into contact."

There probably are no or very few collisions.
 
If our galaxy did collide with another, earth's orbit would change radically I would think and all life would die due to temperature changes before it ever had a chance to collide with another planet. We need to be exactly where we are to keep getting those nice fuzzy sunshine rays!
 
Originally posted by: waggy
Originally posted by: hjo3
Originally posted by: KillyKillall
Originally posted by: Syrch
so am I to assume that the planets of both galaxies get destroyed?
Click to expand...


I would assume so from common sense thought, but have no scientific explanation what so ever.

Anyone know? Could a planet survive that?
Click to expand...
Even though they look dense, galaxies are actually very spread out. Most systems are unaffected as the two mega-bodies pass through each other.
Click to expand...

while they are very dense wouldnt the "impact" cause such reactions that should destroy life on any planet? it would throw that planet into kaos. just a slight tilt in the axis would cause major climate changes.
Click to expand...
Probably not. Consider this: the nearest system to ours is over 4 light years away. It's a triple star system. Even if some other star smashes into it, it's very unlikely that our solar system will experience any effect other than a little extra light from that direction.
 
Originally posted by: SlowSpyder
Our galaxy and Andromeda are on a collisoin course.
Click to expand...
Not exactly.
Given the motion of the Solar System inside the Milky Way, one finds that the Andromeda Galaxy and the Milky Way are approaching one another at a speed of 100 to 140 kilometres per second. However, this does not mean it will collide with the Milky Way, since the galaxy's tangential velocity is unknown.
Click to expand...
 
Originally posted by: SlowSpyder
Our galaxy and Andromeda are on a collisoin course. We won't be around to see how it pans out though. 🙂
Click to expand...
But what if sneaks up on us and turns on the high beams.

 
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