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

In which year did the first space shuttle launch?

Which is the slowest orbiting planet?

What fraction of Earth's gravity is the Moon's gravity?

What is Earth's nearest neighbor in space?

Who was the first U.S. woman astronaut?

What year was the celestial object Pluto discovered?

What was the first probe to land on Venus?

Which Apollo mission was launched on April 11, 1970?

How many stars make up Orion's Belt?

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

What kind of star system is Algol?

How many stars make up the Big Dipper?

The Astronomical Unit (AU) is a unit of measurement based on the average distance between what two bodies?

The Horsehead Nebula can be found in what constellation?

What star is labeled Alpha Ursa Minoris?

What is the second planet in distance from the sun?

What causes the moon to shine?

What is the cargo of a spacecraft called?

To any astronaut, what is an EVA?

What rocket launched the Apollo program?

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

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

Which constellation represents a hunter with weapons?

What is the sixth planet from the sun?