well, when Sun starts to run out, it will expands out, that will probably engulf earth, I'm looking it up as I'm writing this.
As for blackhole, I've always thought there's only 1 in each spiral galaxy. and the size of it dedicated how big the galaxy is (bigger blackhole will be needed to move the whole galaxy with dark matter/energy), *shrugs*, I'm not exactly sure, but when it gets to that many stars colliding, it intrudes into the realm of chao theory and god knows what will happen.
*edit*
you are right, Sun does have 5 more billion years to go. I'd say 4.6, before it goes crazy with Carbon-burning.
Soriku (Feb 10/08): In 5 years the PS3/360 will be dead.
KH3 bet: "If KH3 comes to Wii exclusive, I will take a 1 month of sig/avatar by otheres open a thread apologize and praise you guys' brilliance." http://vgchartz.com/forum/thread.php?start=50&id=18379
Original cast: Badonkadonkhr, sc94597 allaboutthegames885, kingofwale, Soriku, ctk495, skeezer, RDBRaptor, Mirson,
