Guest Stars Monique Gabriela Curnen as Melissa Ramirez Adam Irigoyen as Isaac Rodriguez Gabrielle Rose as Darlene Cole Fiona Fu as CNSA Head / Li Jun Felicia Patti as Cassie Brian Markinson as George Lane Martin Cummins as Jack Willmore Diana Bang as Freddie John Murphy as Ryan Masters Veena Sood as ISRO Head / Meera Patel Anthony Ingram as ESA Head / Ted Salter Sharmaine Yeoh as Chinese Translator Alexander Vishniakoff as Roscosmos Head / Sergei Sokolov Lisa Chandler as Engineer #4 Krista Magnusson as Engineer #5 Bethel Lee as Engineer #6 Wade Sun as Husband (Young Lu's Father) Irene Tsu as Lu's Mother Clem Cheung as Lu's Father Vincent Cheng as Doctor Jessie Liang as Woman (Young Lu's Mother)