It’s highly probable that we are alone, in the sense of being able to communicate in real time (or within our lifetimes) with other intelligent life in the universe. The distances to other galaxies… or even almost all other stars in our own galaxy… dictate this.
The probability of other intelligent life in the universe is very high, IMO. There are just too many billions of galaxies out there that make it nearly impossible that intelligent life HASN’T evolved somewhere. But we’ll never know; the distances are just too great.
And that all is neglecting the fact that we don’t yet know how to communicate with other life forms on our own planet. We assume they aren’t intelligent, but there is a lot of evidence suggesting otherwise. They are here but we can’t communicate with them… so is the fact that we feel alone a problem of our own making?
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