Which of the following is an important part of the reason it is hotter in summer in North America than in winter?

If you could see the new moon, at what time of day (roughly) would it rise?

We now know that the orbit of a stable planet around a star like the Sun is always in the shape of:

List Newton’s Three Laws of Motion.

The star that is currently closest to the North Celestial Pole is:

To leave the gravitational pull of the Earth, and explore other planets, satellites must have at least:

When a planet, in its orbit, is closer to the Sun, it:

In Newton’s Law of Gravity, the force of gravity goes up as the:

The planet in our solar system with the shortest period of revolution is:

If there really were a Santa Claus at the North Pole, what would the cycle of the seasons be like for him and Mrs. Claus?