恐龍滅絶之謎：6千萬年前有幾個隕星撞擊了地球？ - BBC
8/19/2022 12:00:00 AM2 years 8 months ago
by https://www.facebook.com/bbcworldservice/
by https://www.facebook.com/bbcworldservice/
6600萬年前一顆巨大的隕星撞擊地球給恐龍帶來滅頂之災，當時是否還有較小的隕星伴隨它撞向了地球？
Max Alexander/B612/Asteroid Day
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