Which of the following statements about asteroids is false?

The statement that some asteroids are large enough to have atmospheres is false. In reality, asteroids are generally too small and have insufficient gravitational pull to retain an atmosphere. Atmospheres require a body to have a sufficient size and gravity to hold onto gases, which is not the case for asteroids that are typically comprised of solid rock and metal.

Asteroids, especially the larger ones, can be several hundred kilometers in diameter, yet their mass is not sufficient to generate the gravity needed to support atmospheric conditions. Instead, they retain their original structure, appearing as irregularly shaped chunks of materials.

The other statements are correct: asteroids are indeed irregular-shaped and mostly composed of rock and metal, and they do revolve around the Sun in the same direction as the larger planets, which is a shared characteristic of celestial bodies in our solar system.