Kessler, Donald J.2015-11-242015-11-241984-08-212015-0003-4-15-0012015-0003-4-15-0022015-0003-4-15-003http://hdl.handle.net/10657.1/302Memorandum and charts from Donald Kessler predicting the amount of time, for a given length, until meteoroids or orbital debris sever a space tether.en-USTetherlinesLetter