An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit is called a:

A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion is called a :

The system consisting of the sun and the planets and other objects that revolve around it, such as their moons and other small objects is called a:

A system of billions or millions of stars, together with gas and dust, held together by gravitational attraction is called a:

The ______________ contains everything known in space.

What does rotation mean?

What does revolve mean?

What does the term orbit mean?

What galaxy do we live in?

What does Earth rotating on its axis cause or create?

What causes the season? Choose the BEST answer.

How long does it take Earth to rotate on its axis?

How long does it take the Earth to revolve around the sun?

What region of earth receives direct sunlight ALL year long?

What is a leap year?

What is a satellite?

How many degrees is Earth's axis tilted?

Which direct does the Earth rotate?

Which direction does the Earth revolve around the sun?