Physics P2T8 space

• The gravitational field around a dwarf planet is not strong enough to have pulled in nearby objects
• Asteroids are small rocky objects which orbit the Sun
• Comets are made of dust and ice and orbit the Sun in a different orbit to those of planets
• The ice in comets melts when the comet approaches the Sun and forms the comet's tail
• Our solar system is just one small part of the Milky Way galaxy