EPISODE · Dec 1, 2019 · 4 MIN
恐龙灭绝时，太阳系正位于银河系的另一端
from 天文随心听｜讲述宇宙与人的故事
构成昴星团的恒星年龄约为1300万岁，听上去可能很古老，但克从天文学的角度来看，这些恒星仍然十分年轻。恐龙从未有机会见过昴星团，因为这些恒星在其灭绝了几千万年之后方才形成，不仅如此，在恐龙横行于世时，太阳系在银河系中的位置还与现在刚好相反，位于银河系的另一边。
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恐龙灭绝时，太阳系正位于银河系的另一端
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