Any theory of the structure of the solar system (or the universe) in which Earth is assumed to be the center of it all.

He was able to explain the what causes the phases of the moo. According to him, the moon shone only by reflected sunlight.

He made the first successful attempt to determine the size of the earth. He did this by applying the geometric principle.

According to Erastothenes' computations, what is the circumference of the earth

Which of the following is the smallest planet?

This is the branch of physical science dealing with heavenly bodies

Which of the following is the fastest planet?

What do you call to the changing view of the moon?

The phase of the moon that follows the waning gibbous is called the:

When the people on Earth cannot see the moon , which phase is the moon in?

If we have a new moon today, when will we have the next full moon?

He developed and formalized Galileo’s concept of inertia. He conceptualized the force of gravity and he was able to provide an explanation for the elliptical orbits.

Using his mentor’s data, he formulated the three laws of planetary motion: the law of Ellipse, Law of Equal Areas, and the Law of harmonies.

The path of an object that is in revolution about another object or space