Also my character says that the planet should be uninhabited because she is from the present time, (maybe a little bit into the past, like 2005.) and at that point the planet has no intelligent life on it. (Sorry for triple posting!)
The reason Leah thinks the planet is uninhabited is because her information is, really, REALLY, out of date. It is not because the planet is deserted...J-just so you guys know....I'm just saying this in case you guys were confused.
Oooh, we could find out that they are hiding undergrund because this planet is about to be attacked by....something! Or it could be a natural disaster, etc.