"Black hole-more about them" by larkspur1http://www.trailfire.com/larkspur1/trails/34443larkspur1/trails60reality showhttp://www.trailfire.com/larkspur1/marks/86660 

One really wonders if balck holes really exist and if so is it visible to all of us. This site is really awesome. Meet the currently known black holes at this NASA website. There's a bit of geeky stuff in there, but is mostly fun and easy to read.

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