I think the questions could be (so as to comptemplate the possiblities)..
"How long ago did life appear in the Universe?" (within the first billion years? 2nd etc etc) or if a steady stater has it always been there????
"How many species more developed than ours (us rather) are out there?"
"Has intelligent life existed for only hundreds of years or has it been around for billions of years?"
AND " Given the answers you come up with..should we not be building battle stars to protect ourselves when the day comes that we meet our first batch?"
Speculate as you wish as I have a feeling any answers given can not be disproven,
But what if we are it? could you live with that? mmm for me on that realisation I would be off to church to pray for all humanity

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alex