In the *Star Wars* saga, one of the most iconic weapons of the Empire was the Death Star: a self sustained weapons platform the size of a moon, with the capacity to destroy a planet. in *A New Hope,* we see the first Death Star in close proximity to the planet Alderaan, holding the planet hostage as the Empire tries to deduce the location of the Rebel Alliance's headquarters. In *Return of the Jedi*, we see the second Death Star in "dry dock" over the forest moon of Yavin as it is being constructed.

My question is: **How did the Death Star move?** I imagine a spherical space station the size of a moon would be utterly massive, requiring a massive amount of thrust to move it. If it was constructed in low orbit of an inhabited planet/moon, the gravitational field would be immense, consisting of the planet/moon's gravity, and the Death Star's own considerable gravity. Breaking that gravitational field would be a massive task, yet **we see no thrusters or engines on either Death Star**. Were they hidden, stored under the station's surface while not in use? Was the station towed by another vessel?

<sub>I am only looking for direct canonical answers; no Wiki links or references, please.</sub>