what would happen...

[pastor Jeff Otterman]

What would happen if another galaxy collided with our own galaxy? Would we know when the collision would affect earth? If a new star formed in the vacinity of our own Sun would we have any foreknowledge that it was going to happen? What would happen if another star formed near mars? I like questions and many of you seem to have great answers, I am wondering what all of you think. Here is one more, if earth was pulled into a blackhole what is on the other side?
PJ

[Guille]

I think yes, we can predict if a star will form in somewhere, having been given parameters: if we know the amount of mass in a given space we can predict it's gravitational force. And if we know that there is helium and hydrogen (which is what stars are made of, I believe) then we can say if it will be a big star, a small star, a blackhole, or not still a star.

About the collision of galaxies, well, that is a hard question. I think if we know the speed at which the both galaxies are moving towards each other, and th distance of the place in which they will collide to the earth, then we can know when it will affect the earth, by the simple formula of v=d/t.

The last question, we have all made ourselves (and probably more than twice). I believe there is another universe. But I'm not sure to believe if each blachole takes into a different universe or if the all take to a parallel universe to this one which instead of expanding, it contracts. It's all hypothesizing. What do you think?

[michellemfry]

What would happen if another galaxy collided with our own galaxy? Would we know when the collision would affect earth? If a new star formed in the vacinity of our own Sun would we have any foreknowledge that it was going to happen? What would happen if another star formed near mars? I like questions and many of you seem to have great answers, I am wondering what all of you think. Here is one more, if earth was pulled into a blackhole what is on the other side?
PJ

If another galaxy collided with our own, we might not be affected at all. We are expected to collide with Andromeda, I think, far into the future. So if you want to predict the future, you would have to number crunch the collision of two galaxies. I believe the stars will all change. In the blink of an eye, we(stars) shall all be changed.
If a new star formed in the vicinity of the sun, He could become part of a binary star system. He would be married, so to speak. He may try to stay single.
If another star formed near Mars, conditions would be altered on Mars. Perhaps it would become more like Mercury, the closest to a star in our solar system.
Hello, Pastor. I am not an astrophysicist, so understand it is only speculation.
The only thing on the other side of a black hole is the hole itself, all matter becomes part of the hole, including the earth. It is the one place in the universe where what goes up, stays up.