I just found this: "Runaway star collisions create black holes" "In computer-simulated stellar clusters, two stars each weighing more than a hundred Suns come together, creating a superstar whose increased size and gravity make it a target for more impacts. In just a few million years -- a cosmic blink of the eye -- a ball of gas equal in mass to a thousand regular stars snowballs into existence." Huh... am I dumb or there are no stars more massive then 100 solar masses? Please Register or Log in to view the hidden image! An 100M<sub>o</sub> star would have an incredibly fast life. The equation, if I remember well is T=10Gyrs X 1/M<sup>3</sup>. In the case of an 100M<sub>o</sub> star, it would live for about 0.00001Gyrs. The chances of it colliding with other star as massive (or even with any other star!) would be very slim. Also, massive stars are never found in globular clusters... or stellar clusters, whatever that is. :bugeye: Anyone understands anything about that? Please Register or Log in to view the hidden image!