Multiple-Galaxy Collision Simulation

This animation studies the effects of multiple galaxies colliding over time. Astronomers use such simulations to develop theories about the origin of today's galaxies.

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[Dick Dickinson]

i totally agree about the collision issue, but what i had in mind was the increasing chances of being exposed to γ-rays or other exotic phenomena that occur to "over-populated" spots in the universe, which are lethal indeed, for life as we know it at least :)

[CrzyAlx]

Yes, but your wrong:

In a galaxy the distance between planets is so vast that it is extremely unlikely that our or indeed our whole solar system will go anywhere near another

[DeuteriumDrones]

If the Triangulum should encounter the Andromeda again, we should practice "erasing" or destroying the "bridge" which forms between 2 interacting galaxies. This bridge is a plasma filament which serves as a conduit, enabling electromagnetic currents to flow between interacting galaxies. Destroying these "bridges" would allow galaxies to collide, but NOT merge. In other words, they would be free to go their separate ways, carried away by their momentum, based on their own peculiar velocities.

[BirkelandCurrents]

Read: "Shock Acceleration of Relativistic Particles in Galaxy-Galaxy Collisions" by Voelk, Heinz. (google: arxiv.org/pdf/1104.0956v1.pdf)

[DeuteriumDrones]

Google "Stephan's Quintet" - "located about 280 million light years from Earth, provides a rare opportunity to observe a galaxy group in the process of evolving from an X-ray faint system dominated by spiral galaxies to a more developed system dominated by elliptical galaxies and bright X-ray emission."

[DeuteriumDrones]

If 2 galaxies collide on the same plane, it can kick the galactic core/halo out into Space forever.  The Triangulum galaxy does not have a galactic core, but we're not sure whether it's because it has never been involved in a collision, or, it's core was kicked out during a past encounter. There is a slight chance that we could merge with the Triangulum Galaxy first, instead of the Andromeda. That would double the size of our Milky Way Galaxy, WITHOUT forming a supermassive black hole.

[goses2]

OUTRAGEOUS!!!!!