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An interstellar visitor may have changed the course of 4 solar system planets, study suggests
An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...
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What Would Different Planets Look Like as Our Moons?
Follow wild stories of mysterious creatures, ancient civilizations, how tech impacts our world in unseen ways, and the endless surprises our planet has to offer. These are the unbelievable stories ...