Question

Are we alone in the universe?

Answer 1

If you may think that we are then yes, if not then there could be many possibilities that we are not alone in this large large universe.

Answer 2

It's hard to know.

Few astronauts have been out in the atmosphere.

But if you want to read further into this , this is a good resourceful website: https://www.uah.edu/news/news/are-we-alone-in-the-universe-uah-s-dr-gary-zank-doesn-t-think-so