Plans for a sequel to Ridley Scott's sci-fi horror movie 'Alien: Covenant' have been cancelled by Fox. Prospects for the movie have been shaky since 'Covenant' took in just $74 million in domestic box office grosses. Meanwhile its predecessor 'Prometheus' was able to accumulate $126 million in the United States. A source says of the cancellation, "The sequel to Covenant was originally due to start preproduction this month in Sydney. <br />
