He has worked with the Dutch Navy, the USAF and NASA.
He is the author of several books.
His first book, The Theory of Orbits, is an important text on orbital mechanics[?].
... are 1,181 households out of which 33.8% have children under the age of 18 living with them, 55.2% are married couples living together, 9.2% have a female householder with ...