The theory is that paper craft, being much lighter than space shuttles, may escape the worst of the friction and heat that much heavier space shuttles face on re-entry to the atmosphere.

• 其中理论是，由于纸飞行器要比太空梭重量轻很多，因此，可以避免摩擦最大影响，从而避免了在重量更大的太空梭重返大气时的热量。