Asteroid
a small rocky body orbiting the sun
Asteroid Belt
the region of the solar system between the orbits of Mars and Jupiter
Atmosphere
a mixture of gasses that surrounds a planet or moon
Comet
a ball of frozen dust and rock that orbits the sun and has a tail
Crater
a large round pit caused by the impact of a meteoroid
Galaxy
a collection of stars, dust, and gas bound together by gravity
Gas Giant
the outer planets
Gravity
a force that pulls objects toward each other
Planets
a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classified as such
Moon
a natural object that orbits a planet
Milkyway
that galaxy containing the solar system
Orbit
the path an object follows as it moves around another object
Revolution
the movement of an object around another object
Rotation
the spinning motion of a planet on its axis
Solar system
the collection of 8 planets and their moons in orbit around the sun
Star
a ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion
Terrestrial
the name of the inner planets
Dwarf Planet
a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classified as such
Light year
the distance light travels in one year
Kuiper belt
a region of the solar system that is just beyond the orbit of Neptune
Meteor
a small body of matter from outer space that enters the earth's Atmosphere appearing as a streak of light
Universe
all of space and everything in it