I think there is basic universal rules to physics and to some degree biology as well. I think if there is other life forms out there caple of creating machines that can leave their planet they would be very similar to humans or at least at some point in their evolution they would have been.
Think about this in this vast universe there may be planets similar to earth that has intelligent life that are only just now to where earth humans were thousands of years ago and on the flip side there may be planets that have intelligent life where we will be thousands of years from now.
Mind boggling to think about......