Two more actors have signed up to star in the new Star Trek movie, which has already started shooting.

Actor Chris Hemsworth will play Captain James T Kirk's father, George Kirk, even though he is only 24 years old and Chris Pine (James) is 27.

Rules of Attraction star Clifton Collins Jr. has also been added to the lineup as the sidekick to villain Nero, played by Eric Bana.

They both join a cast including Simon Pegg, Winona Ryder and the original Spock Leonard Nimoy.