The moon is open for business, and entrepreneurs are racing to make billions

• NASA is going back to the moon, and this time it means business. 
• Private companies are helping it build lunar transport, GPS, Wi-Fi, and more.
• This new market, which is worth over $100 billion, could be game-changing for humanity.

If NASA has its way, it will send astronauts back to the moon by the end of the decade, making them the first humans to walk on the lunar surface in over half a century.

But this isn't just another scientific mission. This time around, NASA means business.