Theory:Doctor Who television discontinuity and plot holes/The Space Pirates


 * Zoe does not know how candles work. However, in The Mind Robber she recognised them without hesitation.


 * In the cliffhanger to episode three the screams of the Doctor and the others can be heard for ages; in the next episode they've only fallen a few feet.
 * An echo effect due to the cave system.


 * There are noisy explosions in space, but no stars.
 * The number of stars visible would depend on how wide an area one is looking at, and the relative position in space. The "noise" from the explosions is essentially a special effect, equivalent to the background music, or to the noise one would hear if one were standing at the point of the explosion.