How many stars make up Orion's Belt?

What is a huge group of stars, gas and dust in space called?

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

Which constellation are the stars Castor and Pollux in?

Which Apollo Mission was launched on November 14, 1969?

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

Where on the moon did people first land a spacecraft?

What is the sixth planet from the sun?

To any astronaut, what is an EVA?

The Horsehead Nebula can be found in what constellation?

What is the name for the boundary around a black hole, beyond which events cannot affect the observer?

What is the sun mostly made up of?

How many days in a Mercurian year?

What satellite series was known as "fellow traveler"?

Mariner IV sent the first pictures of which planet back to earth?

What is the opposite to ordinary matter called?

What is Uranus' period of revolution around the sun?

Who was the first person in space?

What is Jupiter mostly made of?

What is a sudden violent explosion on the sun called?

Which astronomical body is 3.67 billion miles from the sun?

What was the first planet discovered with the aid of a telescope?

Which of Jupiter's moons is covered by active volcanoes?

The word "lunar" means something related to what?

Which former planet is the tenth-largest body directly orbiting the sun?