I am a bit curious about my new domain. I had a domain before, let's say
http://example.com/. Before expiration of that domain, I bought a new one with the name
http://another-domain.com/. I uploaded all of my content on the second domain, but now when I search in Google about some query related to my
http://another-domain.com/ site then I also find my old domain in the results.
Will this give a duplicate content error for my new domain or any other kind of penalty from Google?