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The force of gravity between two objects in the space depends on .......................... and ......................
the mass of the two objects , the distance between them
The galaxy that our solar system belongs to it is called ............... or the way of ...................
Milky way galaxy , chopped hay
.............. are the greatest units that from the universe.
Galaxies
Planets revolve around the sun in .......... paths.
elliptical
The planets rotates around the sun by the effect of ......... gravity.
sun
............................ is the distance covered by light in one year.
Light year
