Do meteorites fall on other planets?
Yes. Meteorites have been found on Mars by rovers, and impacts are seen on many planets and moons. Whether a fragment survives depends on the planet's atmosphere and the impact speed.
Space rocks hit every world in the Solar System. Craters cover the Moon, Mercury and many moons because they have little or no atmosphere to slow incoming bodies. On these airless worlds most impactors strike at full speed and are largely vaporised or shattered, though fragments of meteorite material are mixed into the lunar soil, and some lunar samples contain small pieces of other meteorites.
Mars is the best place to see actual meteorites. Its thin atmosphere slows small meteoroids enough for some to land intact, and the dry climate preserves them. In January 2005 NASA's Opportunity rover found a basketball-sized iron meteorite at Meridiani Planum, nicknamed Heat Shield Rock; it was the first meteorite identified on another planet. Opportunity found several more, and Curiosity has spotted others, including a large iron named Lebanon in 2014. These irons are useful to scientists because their weathering reveals how Mars's surface environment has changed. Orbiters have also photographed fresh craters forming, and in 2021 NASA's InSight lander detected seismic waves from impacts.
Giant planets have no solid surface to land on, but impacts there can be spectacular. In July 1994 fragments of Comet Shoemaker–Levy 9 slammed into Jupiter, leaving dark scars larger than Earth that were visible in small telescopes. Amateur astronomers have since filmed brief flashes from smaller objects striking Jupiter. Venus, with its very thick atmosphere, crushes and slows small bodies, so only larger impactors make craters there, and its crater record lacks very small craters.
Earth is unusual in having a moderately thick atmosphere, plate tectonics and weather. Our atmosphere filters out small objects, and erosion and geological activity gradually erase craters and meteorites alike, which is why deserts and Antarctica, where preservation is good, are prime places to search.