Classically asteroids are considered to be just rocks, and comets to display evaporation of gases and dust release, making impressive comas and tails. However, this picture has changed in the past years. David Jewitt explains.
Classically asteroids are considered to be just rocks, and comets to display evaporation of gases and dust release, making impressive comas and tails. However, this picture has changed in the past years. David Jewitt explains.
