retrograde motion

orbit or rotation of an astronomical body opposite that of its primary body

en-GB/ˈɹɛtɹəɡɹeɪd ˈməʊʃn/
en-US/ˈɹɛtɹəˌɡɹeɪd ˈmoʊʃən/

Κατηγορίες:

orbitmotion