In Kingdom Hearts 3 you will also be called upon to take a good look at the stars. You must find the position of 9 constellations and photograph them. In this way you can unlock the stargazing trophy / lens. These are located on 3 galaxies, each of which has three constellations (to find them you just have to explore space with your Gummiship).
Below is the location of the 9 constellations to be photographed.
Kingdom Hearts 3 | Guide to the Constellations
Moguri: It is in Starlight Way Galaxy. You must head in front of Toy Box World. The constellation is to your right.
Bomb: It's in Starlight Way Galaxy. You must face the world Olympus. It's on your right.
Kyactus. It's in Starlight Way Galaxy. You must face the Crown Realm. It's on your right.
Imp: This is in the Misty Stream Galaxy. You must be at the MST-01 waypoint. On the right hand side you will see the constellation.
Tomberry: located in the Misty Stream Galaxy. You must be at the MST-01 waypoint. Now just turn 180 degrees full to see the constellation.
Endymion: located in the Misty Stream Galaxy. You have to address the world of the Caribbean. On its right is Endymion.
Ultros: This is in the Eclipse galaxy. Turn towards the Keyblade Cemetery, keep flying and Sora will eventually say that this is a dead end. But it's not, just keep going and you'll meet a ship that will be the boss. Defeat it and you'll reach the final world. Right above it is the constellation.
Bismarck: This is in the Eclipse galaxy, to the left of Waypoint ECL-03.
Omega: Located in the Eclipse galaxy, to the right of Waypoint ECL-03.
Below is the video that shows the exact location of the constellations.
Once you have photographed all of them, you will unlock the Stargazer trophy. See our guidebook index for further help on other aspects of the game.