ridley scott is not the director of the film alien
following his commercial breakthrough with the sciencefiction horror film alien lrb 1979 rrb  his best known works are the neonoir dystopian science fiction film blade runner lrb 1982 rrb  crime drama thelma  louise lrb 1991 rrb  historical drama and best picture oscar winner gladiator lrb 2000 rrb  war film black hawk down lrb 2001 rrb  crime thriller hannibal lrb 2001 rrb  biographical film american gangster lrb 2007 rrb  and science fiction films prometheus lrb 2012 rrb and the martian lrb 2015 rrb