本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 Generic Physics
[单选题]
It can be shown that the approxim+4gmhb /io ,onate age o bbfw81(y-fj tf the universe is 1/H, where H is the Hubble constant. Taking H(bj ff-8yw t1b = 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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Post time 2024-1-22 00:41:59