Question: What is the difference between a dwarf planet and an asteroid - is one bigger?

James Holloway answered on 22 Mar 2013:

Yes typically a dwarf planet is bigger (although there is no doubt an exception somewhere in the universe).

Asteroids are sharp, angular shaped rocks. This is because they are too small to have much gravity, and that means that if you stand on the top of one of its jagged bits and drop something it doesn’t ‘roll down the hill’ – there is no rounding off of the asteroid.