Imagine if the Sun suddenly turned into a black hole—sounds wild, right? First off, Earth wouldn’t get sucked in like in the movies because the Sun’s mass wouldn’t change, so our orbit would stay the same. But things would get really dark and cold, fast. Without sunlight, all plants would die, and the temperature would drop drastically, making life nearly impossible. We’d see the Sun shrink to a tiny point, but its powerful gravity would remain.