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the time it takes for a planet to make a turn (rotation) on its axis (from one solar noon to another)
the force of attration between all masses; dependent on two things: mass of the objects and distance between objects
the tendency of a moving object to continue in a straight line or a stationary object to remain in place unless acted on by an outside force (like gravity)
Solar System Mnemonic
My Very Eagar Mother Just Served Us Nachos (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune)
Astronomical Unit (AU)
the average distance between the Earth and the Sun, or approximately 150,000,000 km (93 million miles)
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