The fourth planet from the Sun; also known as the "red planet."

Which is smaller: Earth or Moon?

This is the phase of the moon when the moon looks like a thin sliver (less than half of the moon's nearside is sunlit).

This is the first planet from the Sun; it is very hot in the day and very cold in the night.

Which planet has the largest rings

Which is the hottest planet?

Is Venus hotter than Mercury?

Mars is the ____________ planet from the sun.

Collision between asteroids produce smaller pieces of rock in outer space known as _______________________

Who am i? Natural objects that revolving around a planet,