there both big
its the comets are smaller than planets, moons, and asteroids. In order of size, usually comets < asteroids < moons < planets
the asteroid belt, the kuiper belt, and the oort cloud.
Planets, moons, asteroids.
Planets, asteroids, meteors, comets, moons (which are also in orbit around their respective planets), dust particles, interplanetary gas.
Comets
No, it is not true. They do hit planets sometimes.
No Asteroids are too small to be considered planets.
Asteroids, comets, minor or dwarf planets, and even some artificial spacecraft orbit the Sun but are not considered true planets.
planets are apart and help are solar system and asteroids hit are planets
Planets are larger and more massive than asteroids, but very nearly the same size and mass as planets.
Planets are generally larger than asteroids. Asteroids are small rocky bodies that orbit the Sun, while planets are larger celestial objects that have cleared their orbit of other debris. Some asteroids can be quite large, but they are still dwarfed by the size of planets.
Asteroids and Comets
Planetoids, or minor planets.
Asteroids are mainly composed of rock and metal, similar to the materials found on Earth and the other terrestrial planets in our solar system. They can also contain ice and carbon-rich compounds.
Asteroids can fall on any planet (or moon).
Asteroids.
its the comets are smaller than planets, moons, and asteroids. In order of size, usually comets < asteroids < moons < planets