Yan 'an, why did I change your pursuit of the space shuttle into a spaceship?

Yan 'an, I changed your space shuttle into a spaceship because it is not suitable for the nature of space flight. The universe is vacuum, the elegant aerodynamic design of the space shuttle is doomed to be unsuitable for space flight, and the atmosphere from the universe does not necessarily need space devices to return like airplanes, so it is most suitable to change to spaceships.