太阳直径约多少千米
题目
太阳直径约多少千米
答案
1光年=94600亿千米.太阳直径=1392590千米.
所以太阳直径是1/6793100光年
银河系直径约10万光年,所以银河系直径是太阳直径的6793.1亿倍
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