評(píng)論
打印
The Iridium must have come from an asteroid, but it must have been a second impact, three hundred thousand years later,
銥只能來(lái)自小行星，但那肯定已是30萬(wàn)年后的第二次碰撞，
for which we simply don't know where the crater is
我們并不知道這個(gè)隕石坑在哪，
and it is that impact that probably finished off the dinosaurs.
可能正是這次碰撞結(jié)束了恐龍時(shí)代。
If Keller was right, there hadn't been one impact but two.
如果Keller是對(duì)的，那么碰撞就不是一次，而是兩次。
The first, Chicxulub, would have been devastating enough.
第一次是毀天滅地的希克蘇魯伯大碰撞。
It would have killed many dinosaurs...
它殺死了無(wú)數(shù)恐龍...
but it did not drive them to extinction, and it didn't create the Iridium layer.
但它并沒有使它們滅絕，也沒有形成銥元素層。
According to Keller and Stinnesbeck, even as earth absorbed the Chicxulub impact,
根據(jù)Keller和Stinnesbeck的理論，在希克蘇魯伯大碰撞陣痛未消之際，
deep in outer space a second asteroid was hurtling toward the planet
太空深處又有第二顆小行星正向地球飛來(lái)，
and this was the asteroid that left the telltale Iridium, and finished off the dinosaurs.
這顆小行星帶來(lái)了銥元素，并且最終終結(jié)了恐龍。
