Star Trek Discovery: Every Easter Egg & Hidden Reference From 'People Of Earth'
12. Terra Incognita
Reunited with her former USS Shenzhou crew mate, Michael tells Saru a little about her adventures as a courier with Book.
She also tells him that she was able to contact Terralysium, but that the human inhabitants from "New Eden" didn't know anything about her mother, Doctor Gabrielle Burnham.
As established in last season's "Perpetual Infinity", Doctor Burnham transplanted the inhabitants of Terralysium from Earth of World War III to the planet in the Beta Quadrant. Michael's plan had been to take the Discovery from the 23rd century to Terralysium to reconnect with her mother, but now there's a new mystery: What happened to Doctor Burnham?