the branch of astronomy concerned with the physical and chemical properties of celestial bodies
astrophysics详细解释
as.tro.phys.ics n.(used with a sing. verb)（名词）（与单数动词连用）The branch of astronomy that deals with the physics of stellar phenomena.天体物理学：天文学的一个分支，从事星球现象的物理研究 【引伸】 as.trophys.ical adj.（形容词）as.trophys.icist
