Spaceships were originally invented by the X'ptho, which enabled them to build a vast empire. They are often mistaken for clouds. In the past, one crashed into the town of Gravity Falls, giving the valley its unusual shape. This may have caused the aura of strangeness the town has, or vice-versa. Most spaceships use a multi-warp drive for sub-light speeds, or a teleporter drive for traveling at approximately 32.6 times the speed of light, by teleporting up to 24,000,000,000 miles every other second, using dimensional wormholes. This also allows them to travel between dimensions and even time, although usually by accident.