Aired 2 years ago - Apr 02, 2018
A planet sculpted from cosmic violence. Earth is a very lucky planet. It has ended up the right size and in the right place. This only happened because of violent cosmic collisions. The crazy thing is, if things had been even slightly different with more or less collisions, we wouldn’t be here. We discover the moments that could have destroyed us, but instead made our planet what it is.
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