Big Bang theory is not valid.

[popeyespappy]

There will be a profound effect before this collision is ever visible. I think I'd pass (but I understand the fixation..it would be cool to watch)

I don’t know how long before the collision Andromada would be visible in the night sky, but it would be at least millions perhaps hundreds of millions of years before the shit hit the fan. It would be plenty of time to enjoy the show.

As far as profound effects go….

Based on current calculations they predict a 50% chance that in a merged galaxy the solar system will be swept out three times farther from the galactic core than it is currently located.[1] They also predict a 12% chance that the Solar System will be ejected from the new galaxy some time during the collision.[6] Such an event would have no adverse effect on the system and chances of any sort of disturbance to the Sun or planets themselves may be remote.[6][7]

Without intervention, by the time that the two galaxies collide, the surface of the Earth will have already become far too hot for liquid water to exist, ending all terrestrial life, which is currently estimated to occur in about 1.4 billion years due to gradually increasing warmth of the Sun.[8][9]

http://en.wikipedia.org/wiki/Andromeda%E...lar_System

ETA: I know it’s counter intuitive, but if we were around when the galaxies collide chances are we wouldn’t be negatively affected by it.