What were the first two elements of the universe?

What type of shift should items in the universe have in relation to Earth?

Scientists believe the universe

Earth's wobble is caused by

Earth's wobble is called

The spinning of Earth on its axis is called

The movement of an object around another object is known as

Earth's seasons are caused by

In the Earth Moon relationship the barycenter is located closer to

Kepler's first law

Which phase of the moon would you see a neap tide?

Which has a greater tidal range?

How long does it take to go from neap tide to spring tide?

How old is Earth thought to be?

Which of the following can cause a nebula to collapse?

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