Actress Tessa Thompson is in awe of how Chris Hemsworth and Mark Ruffalo managed to bring a "sense of freshness and newness" to the forthcoming 'Thor Ragnarok'.Thompson stars with Hemsworth and Ruffalo in Thor: Ragnarok, which hits theaters in November. Thompson plays Valkyrie in the new movie. She says she has learnt a lot from the duo. Thompson thinks it takes talent to be able to bring a new level of acting when they've been playing the roles for seven years.