Final answer:
Asteroids are not spherical because they are too small.
Step-by-step explanation:
Asteroids commonly are not spherical because they are too small.
Unlike planets, asteroids do not have sufficient gravity to pull them into a spherical shape. They are irregular or elongated in shape due to their weak gravitational forces.
Asteroids are generally not spherical due to their small size; they have craters and are made of rock and metal, not water ice. Most asteroids are located in the asteroid belt between Mars and Jupiter, with some crossing Earth's orbit as NEAs.