Occurs when a full moon moves into the Earth's shadow
Occurs when the new moon moves briefly between the Earth and the sun
Rise and fall of the oceans, occurs twice a day
The line through the widest part of an ellipse
A force of attraction between all objects in the universe
Any object that orbits another object in space
The tendency of an object to keep moving or to remain stationary
A rocky object that could be located in a belt between the orbits of Mars and Jupiter
Particles of space that heat up and become visible light as they fall toward the Earth
Icy object that originated beyond the planets
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