how big was it??
bigger than the sun??
what kind of damage would it do a planet?
bigger than the sun??
what kind of damage would it do a planet?
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1 Ceres is approximately 580 miles (930 kilometers) across, about the size of Texas. It resides with tens of thousands of other asteroids in the main asteroid belt. If it ever hit the earth, it would be a extinction level event. Remember the asteroid the lead to the extinction of the dinosaurs was said to be 6 miles across.
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Beyond a certain size, an asteroid would become a dwarf planet, and then a planet. Nothing like an asteroid could approach the size of a star. Massive bodies collapse from gravity and tend not to get bigger than a certain size.
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The biggest asteroid is Ceres, 957 km in diameter. Much much smaller than the Sun. Ceres is safely located in its own orbit far from any other planets.