That was over 8 years ago in 2013.
Today he is 38, and has starred in 30 movies in total, 16 since Thor: The Dark World was released.
In Thor: The Dark World, I think Chris Hemsworth looks:
Thor: The Dark World scores 6.7 out of 10 on The Movie Database.
Chris Hemsworth's first acting role was as 'George Kirk' in Star Trek, released in 2009 when he was 25.