クリス・ハードウィックのインスタグラム(nerdist) - 2月17日 08時01分
More than 60 million years ago, a giant asteroid—or comet—slammed into Earth, catalyzing the extinction of the dinosaurs. This familiar story hasn’t so far included a consensus explanation for the origin of the dino-annihilating object.
Now, a pair of astrophysicists at Harvard say they have a compelling theory explaining the cosmic doom-bringer’s beginnings. And it may not bode well for humanity.
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