written by Chris Hadfield and Kate Fillion written by Sarah Barrell and Kate Simon written by Christopher Cerf and Paige Peterson written by Chris Dixon and Ramsay Cudlipp written by Sarah Ball and Kate Fawkes written by Christiane Dorion Chris Hadfield, Kate Fillion written by Chris Grabenstein written by Tessa Strickland and Kate DePalma written by: Dr Chris Barker and Riley Black