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any stars that have non-star objects orbiting them
Solar System
how many planets orbit the sun?
8
Medium sized main sequence star
sun
the mass of the sun is taken up of ____% of the solar system
99
large objects that independently orbit the sun and don't share their environment with other objects
planets
rocky and/or metallic bodies that independently orbit the sun
astroids
area between the orbits of mars and jupiter with thousands of astroids
astroid belt
a body that orbits a planet or astroids as that object orbits the sun
moons
ices mixed with rocky or metallic solids
comets
generally small (grains of sand) solid particles that orbit the sun
meteoroids
meteoroids buying up as they streak through earth's atmosphere at incredible speeds
meteor
meteors that land on earth
meteorites
ancient people believed that the earth is the center of the universe and the sun, stars, planets and other celestial objects all revolve around it( this theory was proved wrong)
geocentric theory
the planets and other object in the solar system revolve around the sun
heliocentric theory
polish astronomer who developed the heliocentric theory
copernicus
small, solid, rocky planets close to the sun. Few or no moons
terrestrial planets
Large, gaseous planets far from the sun, many moons and rings
jovian planets
planets spinning on its imaginary axis
rotation
the amount of time it takes a planet to rotate once
day
the movement of an object around the sun in a path called an orbit
revolution
the amount of time it takes a planet to go around the sun
year
what are planetary orbits
elliptical
an oval shape that has two points called foci
elipses
the degree of flattening or ovalness
eccentricity of planets orbits
distance between foci
eccentricity of an ellipse
because a planets orbit is an ellipse its distance from the sun changes
eccentricity of planetary orbits
planet is closest to the sun. the sun appears larger
perihelion
Planet is furthest from the sun. The sun appears smaller
aphelion
the closest the planet is to the sun the fastest it goes but when its farther away the speed decreases making it go slower
planetary speed
the further a planet is from the sun the longer it will take to complete an orbit
keplers third law
****Use the Solar system data
What is the mean distance from the sun from mars.
227.9
*******
what is the mass of earth?
1.00
***** The density of Jupiter
1.3
*****What is the mass of Uranus
14.54
Note 
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