Black Holes -- details
Remember – gravity is same as before, away from
mass
Black holes do NOT necessarily pull all nearby material in
A planet orbiting a new black hole would just keep on
orbiting as before (assuming the ejected material or
radiated energy didn’t have an effect)
Any mass can potentially be made into a black hole –
if you can compress it to a size smaller than RS =
2GM/c2
1 MSun: 3.0 km        106 MSun 3106 km         1 MEarth 8.9 mm