space and forces some quiz......enjoy 5.0 / 5 based on 4 ratings ? PhysicsAstronomyGCSEEdexcel Created by: Broken RoseCreated on: 15-10-09 19:37 the first four planets are known as the ________ planets inner 1 of 8 some of the planets natural sattellites are called? moon 2 of 8 what force keeps the planets in orbits? Gravity 3 of 8 where are most of the astroid belts? between Mars and Jupiter 4 of 8 what is the estimated number of galaxies in the universe? a thousand million 5 of 8 what is a galaxy? A cluster of million of stars, held closely togethere by gravity 6 of 8 ________ are space craft that can visit other planets without the need for astronauts. space probes 7 of 8 What do stars form from? nebula 8 of 8
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