Science writer rebecca boyle has been fascinated by this missing planet, the lost world of thea. One idea is that the giant impact was much more epic than we ever could have imagined. A new theory says both worlds just completely melted together and ended up in this like bagel shaped, rotating hell fire disk Of molten rock, droplets, earth, thea, moon. Everything was combined into one giant magma bagal all the magma on the inside swirled together and combined to form the earth anew.
In all our searching of the universe, we’ve never seen another moon like ours. It's big, it's weird, it's played a huge role in shaping our planet. But how did we get it? Every possible story points to cataclysm.
This is the second episode of our new four-part series, Lost Worlds.
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