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Solar System
Term | Definition |
---|---|
Asteroid | Piece of rock or metal made up of material similar to that which formed the planets that orbit the Sun |
Comet | Consists primarily of ice, dust, and rock whose orbit is a long narrow ellipse |
Galilean Moons | The four largest and brightest moons of Jupiter discovered by Galileo |
Gravity | The force of attraction that pulls objects toward each other |
Inner Planet | Any of the rocky, terrestrial planets of Mercury, Venus, Earth, and Mars whose orbits range is within the asteroid belt |
Meteor | Small meteoroid that burns upon entry of Earth's atmosphere |
Meteorite | Remains of meteoroids that strike the surface of Earth or the Moon |
Meteoroid | A natural chunk of rock or dust existing outside Earth's atmosphere |
Moon | Earth's natural satellite that revolves around Earth from west to east |
Orbit | A curved path followed by a satellite as it revolves around an object in space |
Outer Planet | Any of the larger, gaseous planets Jupiter, Saturn, Uranus, and Neptune whose orbits lie beyond the asteroid belt |
Planet | Any of the large celestial bodies that revolve around the Sun in the Solar System |
Satellite | A smaller body that orbits a larger body (the Moon) or Spacecraft that orbits Earth |
Solar System | The Sun together with the group of planets that are held by its attraction and revolve around it |
Sun | The luminous celestial body around which Earth and other planets revolve, and receive heat and light |