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6th

Celestial Objects

TermDefinition
Celestial Objects Objects such as planets, moons, and stars that are located i the sky or in space
System a group of interacting or interdependent parts forming a complex whole; for example, all the factors or variables in an environment or all the planetary bodies revolving around a star.
Solar System The Sun together with the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it.
Gravity The force of attraction that pulls objects toward each other; the force that controls the motion of our solar system.
Orbital Path A curved path traveled by a satellite as it revolves around an object in space.
Sun The luminous celestial body around which Earth and other planets revolve and from which they receive heat and light.
Star A ball of gas in space that produces its own light and heat.
Planet Any of the large celestial bodies that revolve around the Sun in the solar system.
Inner Planet Any of the rocky, terrestrial planets of Mercury, Venus, Earth, and Mars, whose orbits are inside the asteroid belt.
Rocky Made of rocks.
Terrestrial Earth-like
Outer Planet Any of the planets Jupiter, Saturn, Uranus, and Neptune, whose orbits lie beyond the asteroid belt.
Asteroids Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to those that formed the planets.
Asteroid Belt the region between the inner and outer planets where most asteroid s orbit and around the Sun.
Meteoroid A natural chunk of rock or dust existing outside of Earth's atmosphere.
Meteor Small meteoroid that burns upon entry into Earth's atmosphere.
Meteorites Remains of meteoroids that strike the sruface of Earth or the Moon.
Satellite Something that orbits around another object; for example, a moon orbiting a planet or a human-made object orbiting Earth.
Moon A celestial body that revolves around a planet.
Galilean Moons The four largest and brightest moons of Jupiter, which were discovered by Galileo Galilei: Ganymede, lo, Callisto, and Europa.
Comet a celestial body of ice, dust, and rock with an elongated and elliptical orbit.
Coma Glowing, heated dust and vaporized gas that surrounds the icy comet nucleus as it travels near the sun; solar winds cause heated gases to stream out of the nucleus, forming a tail, which points away from the Sun.
Created by: whiteley64
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