[問題] 哈伯定律
在高中物理看到的問題
以下哪些正確?
(A)所有的遙遠星系都以很高的速度遠離我們
(B)恆星離地球越遠,遠離速度越快
(C)星系離地球越遠,遠離速度越快
(D)仙女座大星系屬於本星系團,而本星系團並不會因為宇宙膨脹而膨脹
答案是:ACD
請問B錯是不是因為恆星也可能有藍移
而C是因為星系對銀河系來說都很遠所以理由同A
但這樣D和C就有些矛盾
麻煩各位給我些意見
謝謝!
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