The cover was autographed by the “Soyuz MS-12” crew: Commander, Russian cosmonaut Aleksey Ovchinin; American astronauts Tyler «Nick» Hague and Christina Koch.

On March 29, 2019, American astronauts Christina Koch and Nick Hague performed a spacewalk to help fix a solar array battery problem and to connect a second set of replacement batteries as originally planned. The EVA (extravehicular activity) lasted 6 hours and 45 minutes. This was the first spacewalk for Christina Koch and the 2^nd for Nick Hague. Christina Koch became the 14^th women to walk in space.