An Introduction to Celestial Mechanics (Dover Books on Astronomy)
A Most Incomprehensible Thing: Notes Towards a Very Gentle Introduction to the Mathematics of Relativity
Orbital Motion, Fourth Edition
Fundamentals of Celestial Mechanics, 2nd Revised & Enlarged Edition
Space Mathematics: Math Problems Based on Space Science (Dover Books on Aeronautical Engineering)
It's ONLY Rocket Science: An Introduction in Plain English (Astronomers' Universe)
Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry