8th grade solar system science

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Solar system
All of our planets orbiting the sun in space
sol (the sun)
The center of our solar system the sun is a main sequence star
Planets
Large objects that independently orbit the sun
Asteroids
rockie bodies that independently orbit the sun
Asteroid belt
Area between the orbits of Mars and Jupiter
Moons
a body that orbits a planet
Comet
Dirty snowball made of ices mixed with Rocky solids, highly elliptical orbits
Meteoroids
Generally small solid particles that orbit the sun
Meteors
Meteoroids burning up as they streak through earths atmosphere
Meteorites
Meeting is that Land On earth
Geocentric theory
theory to have said that the earth was in the middle of the solar system and that all planets Revolved around it (wrong)
Heliocentric theory
a theory that says the sun is in the middle of the solar system and all planets revolve around it (righth)
Copernicus
Polish astronomer who developed the heliocentric theory
Terrestrial planets
Smallest, solid, rocky, planets close to the sun
Jovian planets
Large gaseous planets far from the sun
Rotation
Planet spinning on its imaginary axis
Revolution
The movement of an object around the sun in a path called orbit
elipses
And oval shape that has two points called foci
eccentricity of the planets orbit
The degree of flattening ovalness
perihelion
Planet that is closest to the sun
aphelion
Planet that is furthest from the sun
Planetary speed
The closer plan is to the sun the faster it goes
Kepler's third law
The further a planet is to the sun the longer it will take complete an orbit
kepler
German astronomer who first stated laws of planetary motion
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