What does the astronomical object called Charon orbit?

What is the cargo of a spacecraft called?

What is Pluto's period of revolution around the sun?

What is the only moon in the solar system that has an atmosphere?

What are the huge storms that the sun produces called?

What is the third brightest object in the Earth's sky?

Between which two planets does the asteroid belt lie?

Who was the first U.S. woman astronaut?

Who is credited with creating the "Big Bang Theory"?

What agency maintains the U.S. space program?

What rocket launched the Apollo program?

The word "lunar" means something related to what?

Which branch of science did young Carl Sagan tell his grandfather he wanted to practice?

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

The path traveled by a body in space is known as what?

What is seventh planet in order of distance from the sun?

Which Apollo mission was launched on January 31, 1971?

To any astronaut, what is an EVA?

What year was the celestial object Pluto discovered?

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

Where on the moon did people first land a spacecraft?

What must a meteor do in order to become a meteorite?

What was the first probe to land on Venus?

What is the sixth planet from the sun?

Who first proposed the heliocentric model of the solar system?