Galactic Doppelgänger theories?

[Robert Maxwell]

Okay, so think's posts in this thread use scientific words but in a completely nonsensical fashion. What questions involve any science at all, like "what would we call a new galaxy formed out of 3 galaxies colliding?" are not actually scientific questions. That's like asking what to name an asteroid. The answer is: whoever discovers it gets to name it.

think, as amusing as some of your drug-induced diatribes are, please discuss something scientific or technological, or I'll have to close this thread for being offtopic. It has come to be about you, and that's because no one has the foggiest idea what you're talking about.

 

[Silvercrest]

I thought I read somewhere that if two galaxies collided, basically they would just pass through each other. Aside from the odd collision of a few stars here and there. Is that correct?

 

[Kemaiku]

I thought I read somewhere that if two galaxies collided, basically they would just pass through each other. Aside from the odd collision of a few stars here and there. Is that correct?

Its more that it takes so long to happen, hundreds of thousands of years really, that the matter discs merge and swirl, the Supermassive singularities either form a co-habitual swirling pair, or merge as well into a slightly larger one. The end result will be one larger new galaxy, I think one has been recorded lately on a deep space telescope as having done so.

 

[Psion]

I thought I read somewhere that if two galaxies collided, basically they would just pass through each other. Aside from the odd collision of a few stars here and there. Is that correct?

Don't forget that gravitational influences will disturb the shape of both galaxies. While it's unlikely even a few stars will collide, such is the vast emptiness of space, the stars and other matter that make the galaxies up will interact through gravity, and possibly magnetic and solar wind.

I think Chemahkuu's suggestion about the supermassive singularities is, if I understand him correctly, a special case, depending on how the galaxies collide. It's possible the galactic cores will completely miss each other while outer arms distort and merge. The outcome could be a new, massive galaxy, or lots of little galaxy giblets with debris strewn throughout intergalactic space.

Here's a simulation you might enjoy.

 

[Kemaiku]

^Yup, the biggest "what if" about galactic collision is exactly what does happen when the singularities get close to one another, the rest is mainly matter distribution. But there is also the matter of the galaxies Dark Matter halos, what, if any, interaction they have with each other.