I'm going to the moon. Who's with me?

Stone wants to see private (5) ________ build settlements on the moon so they can look for minerals and other resources.

Bill Stone has going into some of the world's deepest (1) ________

Stone's cave exploration teams have had

A space vehicle's fuel can equal

and in order to learn about the world below, he has developed (2) ________

Europa, one of Jupiter's moons, has ice that is

One of Stone's devices can help an explorer breathe

Now he has turned his (4) ________ to the moon.

that can map huge chambers in complete (3) ________.

NASA would like to return to the moon by