The video above is the Ratchet & Clank 2016 Et tu, Copernicus? Trophy Guide and shows how to unlock Et tu, Copernicus? Trophy in Ratchet and Clank 2016.
The trophy is unlocked on Deplanetizer, after you beat the story. Watch the credits and hit continue.
Retrace your steps back to the corridors before the final section and switch to the hologuise.
Stand in front of the door for several seconds until the trophy appears.