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7-Astronomy
The Sun, Planets, Constellations
Term | Definition |
---|---|
Apparent Brightness | the brightness of a star perceived by an observer on Earth |
Asteroid Belt | a group of many rock objects located roughly between the orbits of the planets Mars and Jupiter |
Comets | leftover debris from the formation of the solar system that orbits beyond the edge of our solar system in the deep freeze of space |
Constellations | a group of stars in the sky that has a certain shape and name |
Dwarf Planet | a group of stars in the sky that has a certain shape and name |
Inner Planet | Mercury, Venus, Earth, Mars; small rocky planets that have few or no moons |
Meteoroids | smaller rock bodies that often crash into planets and moons as meteorites |
Moon | smaller rock bodies that often crash into planets and moons as meteorites |
Outer Planet | Jupiter, Saturn, Uranus, Neptune; gas giants with many moons and ring systems |
Planet | Jupiter, Saturn, Uranus, Neptune; gas giants with many moons and ring systems |
Revolution | Jupiter, Saturn, Uranus, Neptune; gas giants with many moons and ring systems |
Satellite | objects that orbit other objects |
Solar System | includes our Sun and the planets, moons, asteroids, comets, and other frozen worlds that orbit the Sun. |
Stars | enormous balls of hot, dense gas that give off their own light |
Sun | the star at the center of our solar system that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit |
System | a group of interacting or interdependent parts forming a complex whole, as in all the factors or variables in an environment, or all the planetary bodies revolving around a star |