The collection of eight planets and their moons in orbit around the sun
Solar System
A ball of frozen dust and rock that orbits the sun and has a tail
comet
the name of the inner planets
terrestrial
a natural object that orbits a planet
moon
the galaxy containing the solar system
milky way
a small rocky body orbiting the sun
asteroid
a collection of stars, dust, and gas bound together by gravity
galaxy
the distance light travels in one year
light year
the movement of an object around another objective
revolution
a force that pulls an object towards each other
gravity
the region of the solar system between the orbits of mars and jupiter
asteroid belt
a small body of matter from outer space of matter from outer space that enters the earth atmosphere appearing as a streak of light
meteor
a large round pit caused by the impact of a meteoride
crater
the spinning motion of a planet on its axis
rotation
a mixture of gasses that surrounds a planet or moon
atmosphere
a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classified as such
dwarf planet
all of space and everything in it
universe
a celestial body moving in an elliptical orbit around a star
planet
a big ball made of gas
star
gas giant
a large planet mostly composed of helium and/or hydrogen
orbit
a regular, repeating path that one object in space takes around another one
revelotion
the object's orbital motion around another object
Kuiper belt
a doughnut shaped region of icy objects beyond the orbit of Neptune