giant impact hypothesis
The Massive Remnants of an Alien World Are Hidden Near the Earth's Core, Study Proposes
A new study suggests that an alien world that smashed into infant Earth and created the Moon might have left vast remains inside our planet.
Life On Earth Was Seeded by Massive Collision That Formed the Moon
“The giant impact of a rocky planet was required to deliver the unique composition of life-essential elements to Earth.”
It's a Good Thing Early Earth's Magma Oceans Only Melted Half the Planet
A giant collision threatened to "melt the entire planet," but ended up only melting about half of it—and helped form the moon at the same time.
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