Zagrożenia z kosmosu: S P A C E T H R E AT A S S E S S M E N T 2019, Principal Authors: TODD HARRISON, KAITLYN JOHNSON, THOMAS G. ROBERTS; Contributing Authors: MADION BERGETHON, ALEXANDRA COULTRUP, Foreword REP. JIM COOPER (D-TN), A REPORT OF THE CSIS AEROSPACE SECURITY PROJECT, APRIL 2019S