This undated artist rendering provided by Space Exploration Technologies (Space X), shows Space Exploration Technology's new rocket Falcon Heavy. On Tuesday, Elon Musk, CEO and chief rocket designer of Space X unveiled plans to launch the world's most powerful rocket since man went to the moon. (AP Photo/Space Exploration Technologies)

This undated artist rendering provided by Space Exploration Technologies (Space X), shows Space Exploration Technology's new rocket Falcon Heavy. On Tuesday, Elon Musk, CEO and chief rocket designer of Space X unveiled plans to launch the world's most powerful rocket since man went to the moon. (AP Photo/Space Exploration Technologies)