there are so many, scientists don't know.
It doesn't seem that scientists are anywhere near to knowing the total number of asteroids in the Kuiper belt.
Mostly asteroids.
The Kuiper belt is composed of asteroids and the Orrt cloud is composed of comets.
Minor planets, comets, asteroids, and dust.
Pluto's orbit is near the beginning of the Kuiper belt.
It doesn't seem that scientists are anywhere near to knowing the total number of asteroids in the Kuiper belt.
Mostly asteroids.
asteroids
Mostly asteroids.
The Kuiper belt is composed of asteroids and the Orrt cloud is composed of comets.
Comet like asteroids.
The Kuiper Belt is a belt of Asteroids outside Pluto's orbit. Orion is a famous star constellation.
Minor planets, comets, asteroids, and dust.
The total number of asteroids in the solar system is not known with certainty, as many asteroids are small and difficult to detect, and new asteroids are constantly being discovered. However, astronomers estimate that there are millions of asteroids in the asteroid belt between Mars and Jupiter, and potentially trillions of objects in the Kuiper Belt beyond Neptune. In addition, there are also a number of asteroids that do not reside in either the asteroid belt or Kuiper Belt, but instead follow their own unique orbits. These objects are sometimes referred to as "rogue asteroids," and their exact number is not known. Overall, while the exact number of asteroids in the solar system is uncertain, it is clear that there are many millions, if not trillions, of these small rocky bodies orbiting the sun.
Many are in the Asteroid Belt, which is between Mars and Jupiter. There are also many scattered throughout the solar system, orbiting the Sun. A number of icy asteroids and planetoids are found in the Kuiper Belt, past the orbit of Neptune.
Pluto's orbit is near the beginning of the Kuiper belt.
I would just call it that - a "group of asteroids".Names of specific "groups" include the asteroid belt between Mars and Jupiter; the Kuiper belt; the Trojans; and others.