NEW HEAVYWEIGHTS TO SOLVE FIVE PROBLEMS
COLLECT MATERIALS FROM ASTEROIDS
TAKE SHORT CUTS IN THE SOLAR SYSTEM
BUILD NEW LARGE SPACE STATIONS
TAKE TOURISTS ON ONE DAY MISSIONS
SEND HUMANS BACK TO THE MOON
COLLECT MATERIALS FROM ASTEROIDS
TAKE SHORT CUTS IN THE SOLAR SYSTEM
BUILD NEW LARGE SPACE STATIONS
TAKE TOURISTS ON ONE DAY MISSIONS
SEND HUMANS BACK TO THE MOON