The largest of the minor bodies of the Solar System are asteroids.
Asteroids are massive lumps of rock that orbit the Sun. They can be anything up to 1000 kilometres wide and are sometimes described as minor planets.
Most asteroids in the Solar System lie in a belt - the Asteroid Belt - orbiting the Sun between Mars and Jupiter, but some are orbiting relatively nearby. These nearby asteroids are called Potentially Hazardous Asteroids or PHAs because they could collide with the Earth as gigantic meteorites.
[Related site: Asteroids - planetary bricks]