Term | Definition |
star | a large, hot ball of glowing gases |
tilt | move or cause to move in a sloping position |
orbit | the path of an object in space as it travels around another object. |
moon | the natural satellite of earth |
telescope | an optical instrument designed to make distant objects appear nearer |
universe | all existing matter and space considered as a whole |
planet | a celestial moving in an elliptical orbit around a star |
revolve | move in a circle on a central axis |
rotate | move or cause to move in a circle around an axis or center |
solar energy | radiant energy emitted by the sun |
constellation | a group of stars forming a recognizable pattern |
atmosphere | the envelope of gases surrounding the earth or another planet |
comet | a celestial object consisting of a nucleus of ice and dust |
lunar eclipse | an eclipse in which appears darkened as it passes into earths shadow |
solar eclipse | an eclipse in which the sun is obscured by the moon |
elliptical | its large and contains millions to trillions of stars |
galaxy | a system of millions or billions of stars together with gas and dust held together by gravitational attraction |
solstice | either of the two times in the year the summer and winter solstice when the sun reaches its highest or lowest point in the sky |
asteroid | a rocky mass up to hundred kilometers wide that revolves around the sun |
satellite | an artificial body placed in orbit around the earth or the moon or another planet in order to collect information or for communication |