If the sun went kaboom, Earth would be in for a cosmic rollercoaster. First off, we'd be instantly plunged into darkness because, well, no more sun. That means no warmth, and things would get freezing real quick. Without sunlight, photosynthesis would tank, messing up the whole food chain – not great news for us or any living thing. Plus, Earth would drift off into space without the sun's gravitational pull. It's like a sci-fi disaster movie, but luckily, the sun's not planning any surprise explosions anytime soon.

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