sevenperforce wrote:Overload_ed wrote:I want to know how the change in size would have affected asteroids that formerly would have hit the moon? I know the moon protects us from many hits. What would happen if an asteroid were to contact the moon black hole?
It depends on the size of the asteroid. Smaller asteroids passing close to the black hole moon will be torn apart by tidal forces and form a ring, then an accretion disk. The larger the asteroid, the closer it will have to come to the event horizon to be torn apart; otherwise it will be flung off in another direction. Assuming that asteroids can approach from any direction, this neither increases or decreases the chance of it hitting the Earth.
However, since the distance at which tidal forces would rip an asteroid apart is much lower than the current radius of the moon, most trajectories which would have formerly impacted the lunar surface would instead pass by, thus having a greater chance of hitting Earth.
Nope, smaller asteroids will have to approach closer to be torn apart.
With small asteroids, almost all of the force holding them together is from the strength of the rock.
With Big asteroids, Gravity becomes the main force holding them together, and they get torn apart once they enter the roche sphere.
Also, larger size means stronger tidal forces.