Comments by "carl gangl" (@CSGATI) on "10 things you should know about black holes" video.

  1. 20 things we don't know.
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  2. If gravity is dependent on mass light cannot be pulled in a black hole but it is therefore light must have mass ever so small and light moving through gravitational fields will slow and maybe speed up therefore light speed is not constant therefore red shift expansion is flawed.
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