Space Terminology http://planetfacts.org/space-terms/ Axis http://planetfacts.org/space-terms/ http://planetfacts.org/space-terms/ Eccentric Azimuth Diffraction http://planetfacts.org/space-terms/ http://planetfacts.org/space-terms/ Interstellar http://planetfacts.org/space-terms/ http://planetfacts.org/space-terms/ http://planetfacts.org/space-terms/ Orbit Eccentric http://planetfacts.org/space-terms/ http://planetfacts.org/space-terms/