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Remember – gravity is same as before, away from
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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
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orbiting as before (assuming the ejected material or
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radiated energy didn’t have an effect)
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Any mass can potentially be made into a black
hole –
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if you can compress it to a size smaller than RS
=
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2GM/c2
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1 MSun: 3.0 km 106 MSun
3106
km 1 MEarth
8.9 mm
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