本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 国际高中通用物理
[单选题]
It can be shown that scm knug)2p2:.y ss a)th 6du qh8(vp u;k2vym*etcxe 42e approximate age of the universe is 1/H, where H is the Hubb2;8 6h ut ykmvu4devcq*2p(exle constant. Taking H = 20 km/s/Mly, estimate the age of the universe, 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:
暂无
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