Although I strongly suspect and on most days do believe that the major sexual organ of this Capital-U Universe includes the clockwork manufacture of life such that life goes on to precision design the universe before existence existed, I don't believe that we have made contact with sentient life that originated on other planets or other omni-dimensional beings that can travel through time as we would travel through space.
https://www.youtube.com/watch?v=xZWQ_ogVOxA
Although I do harbor a tiny belief that there in fact may be aliens from other dimensions in our ranks nay philistine at this very moment, for me to hold open this possibility is to also say that these other species are many tens of billions of years more highly evolved than ours are on this tiny planet.
My better horse sense says no, ayyyy lmaos are not present within our field of view and within our area of effecting outcomes. I can maintain this view while also believing that life is what makes the universe new again after it runs down to nothing.
So we will be making contact with aliens at some point in our future, but this may be further out than even we can imagine, since all the Black holes circling back to all fall into each other, may be what it takes to crack a can of chuck norris on the higgs field, and present the sexual organ of the universe, that life will be able to emerge its godkey, and upon turning the crank of babylon in it, make the universe new again, so that it goes on to make life again as we magically just showed up one day.