Collision that helped formed the moon started life on Earth, study suggests
A collision between Earth and another planet that helped form the moon may have also delivered key components for creating life, a study suggests. Rice University researchers believe the Earth collided with another planet roughly the size of Mars more than 4.4 billion years ago. The collision not only helped form our moon, but the planet smashing into Earth left elements such as carbon and nitrogen, called volatiles, required to form new life.
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