Currently scientist think the Universe is _________________.

According to Kepler the shape of planetary orbits are____________.

Earth's day and night are caused by _______________.

Earth's seasons are caused by ____________.

Earth's axis is tilted approximately _________________ degrees.

The point between two objects where they balance each other is ____________.

_________________ is the force exerted on the Earth by the moon and on the moon by the Earth.

________________ is the wobbling around the precessional axis, and is caused by the moon.

According to Kepler what happens to a planet's speed as it gets closer to the Sun?

What is the shape of the Milky Way Galaxy?

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