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]
It can be shown that the approximate age wndlo.3qtq4;d bg ex /:7n5ikof 3aj ht0k brm fq2k3 ;rr,f,ca5,zq7oa the universe is 1/H, where H is the Hubble constant. Taking H = 20 km/s/Mly, estimate the age of the unik o hqa3rz0tbf ,k,ra;5r7cm j ,fa32qverse, in years.
A. 15 thousand years
B. 15 million years
C. 15 billion years
D. 15 trillion years
参考答案: C
本题详细解析:
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