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[?].
... is $79,745. Males have a median income of $46,444 versus $34,000 for females. The per capita income for the town is $25,432. 4.8% of the population and 3.4% of families ...