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longship

(40,416 posts)
4. Well, black holes are not vacuum cleaners.
Thu Jan 17, 2013, 04:58 PM
Jan 2013

They have the exact same gravity that a star of the same mass. If the sun were a black hole of the same mass the planets would orbit just the same as they do now.

There is nothing special about a black hole except it is much more compressed and it has an event horizon. Now, you don't want to go anywhere near that event horizon. But, it is close in. Things outside the event horizon only see the black hole's mass, as if it's a normal star.

I've simplified things quite a bit but that's the basic way it is.

So, I am not worried about black holes.

Recommendations

0 members have recommended this reply (displayed in chronological order):

Thanks n2doc! This needs more investigation.. Permanut Jan 2013 #1
Uhm... Neoma Jan 2013 #2
"Close" is extremely relative. jeff47 Jan 2013 #3
Well, black holes are not vacuum cleaners. longship Jan 2013 #4
Good to know. Neoma Jan 2013 #5
I am a huge Bad Astronomy fan. longship Jan 2013 #6
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