另一颗小行星正朝着我们的前来——本周的第二颗小行星——但没必要担心，有惊无险而已。新发现的太空岩石将在星期五下午离地球39000英里（64000公里），不到地球离月球距离的1/5掠过。

见：

Asteroid coming close Friday: Don't worry, we're safe

Asteroid coming close Friday: Don't worry, we're safe - ABC News

我们担心小行星撞地球不是没有理由。

因为最新的研究表明：大约6600万年前，当小行星撞击地球时，它在全世界引起了毁灭，恐龙由此灭绝，结束了我们现在所说的中生代。

见：

The Chicxulub Asteroid Impact that Killed the Dinosaurs Also Created Ocean Eruptions on the Other Side of the World

The Chicxulub Asteroid Impact that Killed the Dinosaurs Also ...

The asteroid that killed the dinosaurs triggered a natural disaster that scientists hadn't realized, according to new clues from the ocean floor

https://www.sfgate.com/technology/businessinsider/article/The-asteroid-that-killed-the-dinosaurs-triggered-12563186.php

Meteorite that killed the dinosaurs may have triggered underwater volcanoes

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