Aliens

With the recent advancements we have seen in human technology, our ability to explore and gather intel on secure locations is amazing.

If we found another planet how do you think we would we observe an alien race, certainly not by piloting ships on their world. we would probably use drones, and inconspicuous cameras.

The risks of using piloted crafts is simply too high. What if our biology posed a threat to them, what if their biology posed a threat to us.

If the aliens are advanced enough that they have discovered us, they are probably observing us with remote technology.