The surface of Mercury is similar to the surface of our Moon. The photos of Mercury taken by the space probe Mariner- 10 brought home this similarity. Mercury contains huge Multi- ring basins, and many lava flows.
Mercury is Pockmarket with craters. The craters range in size from 100 meters, to 1300 kilometers. Some are young, with sharp rims and bright rays extending from them. Others are highly degraded, with rims that have been smoothed by the bombardment of meteorites.
The impact of meteorites produced concentric mountain rings three kilometers high, and threw out materials 600 to 800 kilometers across the planet. After the impact, the crater was partially filled with lava flows.
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