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What would happen if a rogue planet entered our solar system?

Scientists found a mysterious rogue planet roaming aimlessly outside our solar system. What if it came closer?
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What would happen if a blazar hit our solar system?

See what would happen if a blazar directly hit our solar system. GOP Lawmaker Behind Epstein Push Fires Back After Trump Attacks His Marriage STILLS: Satellite images show Russia's Novorossiysk port ...