本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 通用国际物理
[单选题]
The Earth's orbit has ac)n vw o0ai km.8qq)4t mean radiuspspno 3y,gcbpu3bce/ . :q7 .p of $1.5 \times 10^{8} \; km$. Over a six-month period, the apparent position of a particular star varies by $0.00014^{\circ}$ due to parallax. How distant is the star, in ly? (1 ly = $9.46 \times 10^{15} \; m$)
A. $0.13 \; ly$
B. $1.3 \; ly$
C. $13 \; ly$
D. $130 \; ly$
参考答案: C
本题详细解析:
暂无
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