Topic 8 0.0 / 5 ? PhysicsSpace PhysicsGCSEAQA Created by: AMColemanCreated on: 12-03-18 19:57 The solar system includes all the objects that orbit the sun Planets, moons, dwarf planets, artificial satellites 1 of 7 Our galaxy is called The milky way 2 of 7 The size of the orbit depends on The objects speed. If its a closer orbit it must be travelling faster to not crash into the object as its feeling a greater gravitational force. 3 of 7 Moons orbit Planets 4 of 7 Planets orbit Stars 5 of 7 Light from distant galaxies Has a longer wavelength than expected, this is called red shift and suggests the source of the light is moving away from us. 6 of 7 Dark matter is The name given to unknown substance which holds galaxies together but doesnt emmit any electromagnetic radiation. 7 of 7
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