There are several synonyms for the term "micrometeorite". Some of these include cosmic dust, space dust, micrometeors, and interplanetary dust particles. These tiny particles are often the result of debris left behind by comets or asteroids passing through our solar system. They can be as small as a grain of sand or as large as a pebble, but their impact on spacecraft and space stations can be significant. Micrometeorites can cause damage to outer space objects, and they also pose a potential risk to crew members aboard manned spacecraft. These synonyms are commonly used in the field of astronomy and space exploration.