Earth has been hit by large objects such as asteroids in the past, and evidence like volcanic ash layers and mass extinctions support this.
Evidence of impacts on Earth: Scientists have gathered evidence of Earth being hit by large objects such as asteroids in the past. Some of this evidence includes layers of volcanic ash, mass extinctions in the fossil record, and changes in average global temperatures. Impact craters on Earth's surface and geological deformations are also visible remnants of past collisions.
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