In an ellipse, the ratio of the distance between the foci and the length of the major axis is called:

What phase of the Moon must it be to have a solar eclipse?

The time it takes for the Sun to return to the same place in our sky after the Earth has rotated once is called:

According to the geocentric view, everything in the heavens had to go around the Earth, which was the center of the universe. What objects did Galileo discover with his telescope that clearly didn’t go around the Earth?

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: