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10 Cards in this Set

  • Front
  • Back
Terrestrial planet
one of the highly dense planets nearest to the sun; mercury, Venus, Mars and Earth
Prograde rotation
The counter clockwise rotation spin of a planet or moon as seen from above the planet's North Pole; rotation in the same direction as the sun's rotation
Retrograderotation
The clockwise spin of a planet or moon as seen from above the planet's North Pole
Gas giant
A planet that has a deep massive atmosphere, such as Jupiter, Saturn,Uranus or Neptune
Satellite
a natural or artificaial body that revolves around a planet
Phase (astronomy definition)
the change in the sunlit area of one clestial body as seen from another celestial body
Eclipse
an event in which the shadow of one celestial body falls on another
Comet
a sma;; body of ice, rock, and cosmic dust that follows and elliptical orbit around the sun and that gives off gas and dust in the form of a tail as it passes close to the sun
Asteroid
a samll rocky object that orbits the sun, usually in a band between the orbits of Mars and Jupiter
Meteor
Meteorites
Meteoroids
- a bright streak of light that results when a meteoroid burns up in the Earth's atmosphere
-a meteoroid that reaches the Earth's surface without burning up completely
-a relatively small, rocky body that travels through space