reply to post by gps777
They have said also that because of the distance between planets and stars that there is a great chance that no collisions would
That is a completely absurd hypothesis. Particles are 99.99% empty space, yet when you hit a wall you don't go through it do you? Lots of matter from
each galaxy will collide, and lots of matter which isn't on a collision course with matter from the other galaxy will most likely be attracted to
matter from the other galaxy due to the force of gravity. Furthermore, the other galaxy will not simply pass right through our galaxy and keep going,
both our galaxies have way too much mass, they will merge into one galaxy due to the forces of gravity and many violent collisions will take place as
that process happens.
reply to post by alfa1
Wouldnt worry about it too much.
According to wikipedia, we've only got 1 billion years left anyway...
In one billion years' time, as the Sun's radiation output increases, its circumstellar habitable zone will move outwards, making the Earth's
surface hot enough that liquid water can no longer exist there naturally. At this point, all life on land will become extinct
That doesn't really matter because by the time that happens we will most likely be occupying other planets in other star system... either that or we
will have already exterminated ourselves.
edit on 1-6-2012 by ChaoticOrder because: (no reason given)