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 Martin Cummins as Jack Willmore Brian Markinson as George Lane Diana Bang as Freddie Michael Patrick Thornton as Dr. Fred Putney John Murphy as Ryan Masters Veena Sood as ISRO Head / Meera Patel Anthony Ingram as ESA Head / Ted Salter Marion Eisman as Miriam Weisberg Alexander Vishniakoff as Roscosmos Head / Sergei Sokolov Jay Zhang as Zhang Yong Jamie Nieto as Travis Parker Lydia Campbell as Jane Adam Pateman as Engineer #3 / Adam Jessica Garcia as NASA Assistant Ryan Mah as Engineer #1 / Dave Derrick Su as Zhang Lei Olena Medwid as Natalya Popov Lisa Chandler as Engineer #4 Bethel Lee as Engineer #6 Krista Magnusson as Engineer #5 Emma Sukhomenyuk as Misha's Grandchild #1 David Pavlov as Misha's Grandchild #2 Maxim Aleksandrov as Misha's Grandchild #3 Shevon Nieto as Veronica Grace Wang as CNSA Assistant