An icy rock that travels around the Sun. Some comets appear to have bright tails.
The third planet from the Sun, it's located between Venus and Mars
A very large group of stars and planets such as the Milky Way
A piece of rock and/or metal from space that enters the Earth's atmosphere at high speed, vaporizes, and forms a streak of light as it falls to the Earth. Most meteors - or shooting stars -- are as small as a grain of rice!
The satellite that moves around the Earth approximately once every 28 days and reflects light from the Sun
A large object circling the Sun
1. A spacecraft that is sent into orbit around the Earth, the Moon, or another space object
2. A moon -- or other space object -- that travels in an orbit around a larger space object
Solar System (soh-lur siss-tuhm)
The Sun and the other space objects that move in orbit around it
A ball of gases in space