Here is the full list of all 11 Observation trophies - 9 bronze and 2 gold. It takes around 6-8 hours to unlock all of the trophies on PlayStation 4.
Reached Saturn, somehow.
Gained access to Universal.
Reached the Rescue Station.
Broke the first law.
Investigated the jettisoned module EAS-12.
Remarked on your effigy.
Found the alternate Emma on the alternate station.
Found Emma's last message in her bunk.
All the worlds are yours...
Recovered and/or combined all Data Drops.
Brought the new gift home...