Elara herself may be a strange visitor from another planet, with powers and abilities far beyond those of mortal men.
Pretty good infrastructure for a pile of rubble.They'd have an implanted universal wi-fi and 3-D holodeck space enabling them to partake in any entertainment option on any planet in their Federation of Planets. For fun they may also make frequent visits to Earth, popping in on people to scare them bejesus out of them, or flying their craft around our planes to get a charge out of us.
It's very possible. It's even likely. In fact....Is it possible that the Professor on Gilligan's Island orchestrated the shipwreck as part of his study of human behavior?
Is it possible that the Professor was a Martian, like Uncle Martin, and that there were many other Martians like them all over the planet, conducting similar experiments-- to determine whether they will allow us to live?