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  • Black holes

    Black holes
    1973·21.85 MB·New!
    . GURSKY: Observations of Galactic X-ray SourcesI. D. NOVIKOV and K. S. THORNE: Black Hole Astrophy  ...
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“ Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow." ” ― Mary Anne Radmacher
Ask yourself: Is there an area of your life where you feel out of control? Especially in control? Next