The manuscripts did not say definitely that interplanetary travel was ever made but did mention, of all things, a planned trip to the Moon, though it is not clear whether this trip was actually carried out.

• 手稿没有明确说行星间旅行什么时候进行过只是提及计划到月亮旅行所有东西,虽然是否这个旅行实际上完成没有不是清楚的。