Since asteroids, comets, and meteoroids are the primary raw materials for planets, they are essential to the solar system. They're also significant since they're thought to be old excess from the early years of our solar system's development.

COMETS- are heavenly bodies like dirty snowballs in which they are composed of dust and metal rocks and are surrounded by a thick icy shell. These types of heavenly bodies come from two places in the solar system: ¹Kuiper belt which is the origin of many short-period comets in the solar system, and the other one is the ²Oort cloud which is the origin of the long period comets in our solar system. In addition to this, comets orbit the Sun in a highly elliptical orbit.
Halley's Comet is the most famous comet. This comet was last seen in February 1876.
Parts of comets: 

ASTEROIDS- the second heavenly body discussed earlier—are rocky objects smaller than planets that were left over from the formation of our solar system. They are also known as "minor planets." These are made mostly of rock, with some clay, silicate, and different metals (nickel and iron). Most asteroids are located in the main asteroid belt.
Trojan Asteroid - shares Jupiter orbital path.
Near Earth Asteroid - have orbits that pass close by the Earth.
Three broad composition classes of asteroids:

METEOROIDS - these heavenly bodies are the rocky or metallic fragments of the planets, asteroids, and comets that have not yet entered the Earth's atmosphere.

METEORS - are commonly known as "shooting stars." If meteoroids were heavenly bodies that didn't enter the Earth's atmosphere, but meteors would, because these are the meteoroids that heat up in the atmosphere, which later form light that can be seen by our naked eye.

METEORITES - these are the heavenly bodies that have already reached the Earth's surface.

Small stony objects orbiting the Sun are known as asteroids. Asteroids orbit the Sun in the same way that planets do, but they are considerably smaller. Small stony objects that orbit the sun are known as asteroids. Although asteroids orbit the sun in the same way as planets, they are much smaller.

Meteoroids are small asteroids to large asteroids that float across space. Meteors are fireballs or "shooting stars" that enter Earth's atmosphere (or that of another planet, such as Mars) at great speeds and burn up.

A meteor is a bright streak in the sky created by a meteoroid crashing through the atmosphere of Earth. Meteoroids are rocky or iron-based objects that orbit the sun. Asteroid collisions produce the majority of meteoroids, which are tiny rock pieces. As they orbit the sun, comets produce meteoroids, which are dust and debris that fall to Earth.

A meteorite is a rock that falls from space to Earth. Asteroids, tiny stony rocks that orbit the Sun principally between Mars and Jupiter, make up the great bulk of meteorites.

 

And the importance of heavenly bodies such as meteoroids, meteorites, comets, and asteroids is that ,It aids in the discussion of major issues. It studies the birth and development of the universe, as well as the evolution, physics, chemistry, meteorology, and motion of celestial objects. We may learn about our origins, our future, and how physics works in situations that are hard to replicate on Earth by researching the cosmos beyond our own planet. Humans have looked to the sky for guidance in navigating huge oceans, determining when to produce crops, and answering concerns about our origins and how we arrived here throughout history. It's a practice that can change the way we see the world by opening our eyes, giving us context for our place in the universe. As our knowledge of the world grows, we find ourselves and our perspective of the world becoming increasingly interwoven with the stars. The discovery that the basic components found in stars, as well as the gas and dust that surrounds them, are the same elements that make up our bodies has strengthened our bond with the universe. This connection has an impact on our lives, and the wonder it evokes is likely one of the reasons why astronomy's magnificent visuals are so popular in today's culture.