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Solar System
solar system unit
Term | Definition |
---|---|
star | a large, hot ball of glowing gasses |
tilt | when an object or planet is leaning or slanting on it's side |
orbit | the curved path in a planet, moon, or star |
moon | the natural satellite to Earth |
telescope | an optical instrument uses to make far objects look closer |
universe | all planets, stars, and galaxies |
planet | a celestial body moving in an elliptical orbit around a star |
revolve | move in a circle on a central axis |
rotate | to move or cause to move in a circle around a center or axis |
solar energy | radiant energy emitted by the Sun |
constellation | a group of stars forming a reconizable pattern |
atmisphere | the envelope of gasses surrounding the Earth or another planet |
comet | an objet in space made of ice and dust, and near the Sun it forms a tail of gas and dust |
lunar eclipse | an eclipse in which the moon appears darkened as it passes through the Earth's shadow |
solar eclipse | an eclpise in which the Sun is obscurbed by the moon |
elliptical | using or involving ellipsis |
galaxy | a system of millions or billions of stars, planets, dust, and other objects |
solstice | either 2 times a year, the summer solstice and the winter solstice, when the sun reaches it's highest or lowest piont in the sky at noon |
asteroid | a small rocky body orbiting the Sun |
satellite | an artificial body placed in orbit around planets and moons to colect information |