Space
The region between the inner and outer planets
asteroid belt
Large and small rocks or metallic masses orbiting the Sun
asteroids
Objects, such as planets, moons, and stars, that are located in space
Celestial Objects
A celestial body of ice, dust, and rock with an elongated and elliptical orbit
comet
The four largest and brightest moons of Jupiter
Galilean Moons
The force that causes objects with mass to attract one another
Gravity
The rocky, terrestrial planets
inner planets
A small object that enters Earth’s atmosphere
meteor
Remains of a meteoroid that strike the surface of a planet or moon
meteorite
A natural chunk of rock or dust existing outside Earth’s atmosphere
meteroid
A celestial body that revolves around a planet
moon
A curved path followed by a satellite as it revolves around an object
orbit
The planets Jupiter, Saturn, Uranus, and Neptune
outer planets
A large celestial body that revolves around a star in a solar system
planet
A natural or artificial body in orbit around a planet
satellite
A star and the group of planets that are held by its gravitational attraction
solar system
A celestial body consisting of a mass of gas held together by its own gravity
star
The luminous star around which Earth and other planets revolve
sun
On or of Earth
terrestrial
The inner planets are small and
rocky
the outer planets are gaseous and
large
rotation
One complete turn around the sun
revolution
The model by which the sun is the center of the universe
heliocentric model
The model that believes the Earth is the center of the universe
geocentric