thiên văn lý học 
astrophysics [ thiên ] : (1) thousand; (2) partial (to), favorable, pro-(something); (3) heaven, sky, God, heavenly, divine, celestial; (4) (classifier for articles, novels, chapters); (5) to move, shift, change; (6) section, part, piece
[ văn ] : literature, letters, poetry; appearance, look
[ lý ] : physics; reason, principle, law
[ học ] : to study, learn (how to); field of study
Most Common Compounds Set 1:
Most Common Compounds Set 2 :