What are the chances of there being aliens/ other intelligences out there?

Question: What are the chances of there being aliens/ other intelligences out there?
- Keywords:
  alien,
  space
Asked by adamthescientist to Ceri, Marikka, Matt, Rob, Sally on 18 Nov 2014. This question was also asked by miquelfont, Hamy.
- Ceri Dare answered on 18 Nov 2014:
  
  I think if there were intelligent aliens, they would be so very different from us that we wouldn’t be able to communicate or even recognise them. But I love reading books with aliens in!
- Robert Hampson answered on 19 Nov 2014:
  
  Previously answered a similar question here: /antibion14-zone/2014/11/14/are-we-alone-in-the-universe/
  
  If you want more specific or different information, please make a comment below.

Question: What are the chances of there being aliens/ other intelligences out there?