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Remember – gravity is same as before, away from mass
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Black holes do NOT necessarily pull all nearby material in
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A planet orbiting a new black hole would just keep on
orbiting
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as before (assuming the ejected material or
radiated energy
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didn’t have an effect)
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Any mass can potentially be made into a black
hole – if
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you can compress it to a size smaller than RS
= 2GM/c2
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1 MSun: 3.0 km 106 MSun
3106
km 1 MEarth
8.9 mm
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If you do make material fall into a
black hole, material
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will be falling at close to the speed of light when it
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reaches RS
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If that falling gas collides with and heats other gas before it
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reaches RS, then light from
that hot material (outside RS) can
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escape.
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