Elon Musk holds the keys to the moon because SpaceX's Starship megarocket launch is crucial to NASA's return

• SpaceX plans to launch its flagship megarocket Starship for the first time in April. 
• The rocket, which NASA has tagged for upcoming missions, is crucial to NASA's return to the moon.
• As NASA moves away from building its own rockets, commercial players will be central to missions.

NASA is inching ever closer to returning to the moon after 50 years — and SpaceX is playing a vital role in the mission.