Who was the third person to walk on the moon?

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

What is the distance that light travels in a year called?

I am the galaxy closest in light years to the Milky Way Galaxy?

The Planting Moon is found in which month?

Who was the first U.S. woman astronaut?

By what name is a quasi-stellar radio source better known?

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

What does the astronomical object called Charon orbit?

Which astronomical body is 3.67 billion miles from the sun?

How many stars make up the Big Dipper?

What is a sudden violent explosion on the sun called?

What astrological sign starts on January 21st?

How many astronauts manned each Apollo mission?

What is a huge exploding star radiating as much energy as the sun would over about 10 billion years?

Which Apollo mission was launched on January 31, 1971?

What kind of star system is Algol?

How many days in a Mercurian year?

What is the "disk" that encircles a black hole called?

What does the first "A" in NASA stand for?

How long does it take for the moon to revolve around the earth?

About how many days does it take for the moon to pass through all phases?

What star, next to the Sun, is nearest to Earth?

What is the name for the Sun's outer-most atmosphere?

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