ScienceCasts: NASA on the Lookout for a New Meteor Shower on May 5, 2014 Sky watchers in North America could witness a new meteor shower on May 24th when, for the first time, Earth passes through a cloud of dust from periodic comet 209P/LINEAR.
This illustration helps put the sizes of asteroids and dwarf planets in perspective. Mathilde, Luteita and Vesta are asteroids. Ceres and Pluto are dwarf planets. Earth's Moon, which we all see in the night sky, is provided as an easy visual reference.