Physics Unit33: Astrophysics and Cosmology (id: 673a620c3)

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]
Estimate the speed of a galaxy tk4v sgacd/ k *pb:x4uv4(0xrip 1 j4sq*rbj/*wq (un 3wy-pbwhat is 10 billion light-years away.

A. $0.1 \; c$
B. $0.3 \; c$
C. $0.5 \; c$
D. $0.7 \; c$


参考答案:  C


本题详细解析: 暂无

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