Final answer:
Numerous small objects, including comets and meteors, orbit the sun. Comets take long to orbit due to their distant and elongated paths. Meteorites are the remnants of these objects that make it through Earth's atmosphere and impact its surface.
Step-by-step explanation:
Besides moons and planets, many other objects orbit the sun such as rocks, ice, comets, and meteors. When we see a streak of light in the sky, it's a chunk of rock burning up in the Earth's atmosphere, which is called a meteor. Observing a star with a fuzzy tail usually means spotting a dusty chunk of ice heated by the sun, known as a comet.
Comets take a long time to orbit the sun because they often have highly elongated orbits that span vast distances from the sun, and due to Kepler's laws, their orbital speed decreases significantly when they are far from the sun. The sun's gravitational pull holds planets, meteors, and comets in orbits that are elliptical.
Between a comet and a meteor, a comet usually has a longer orbit. Meteoroids, which become meteors when they enter Earth's atmosphere, are chunks of rock and metal that orbit the sun. Comets are composed of ice and dust and can leave behind debris that leads to meteor showers when Earth passes through the comet's former path. A rock that falls from the sky and lands on Earth is a meteorite, and the pockmarks on a meteorite are caused by the ablation of its material as it passes through the atmosphere.
The reason Earth isn't covered in craters like the moon is because of its dynamic atmosphere, weathering processes, and geological activity that erodes and covers the impact sites over time.