Black holes are an important topic in astrophysics research.
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usage
The full noun for the discipline is 天体物理学 (tiāntǐwùlǐxué, with -学 'study'); 天体物理 alone is the modifier form, used in compounds like 天体物理学家 ('astrophysicist') and 天体物理研究所 ('astrophysics institute').
