Your first goal when you get to Igliak is to head to the Museum of Intergalactic History. When you land, check the weapons vendor to see a new weapon, the Netherbeast, is available for purchase. Go straight ahead for a cutscene, then you will be able to head inside the museum. Note that the tourbot must be brought with you at all times inside, as it will be needed to progress.
In the first room of the museum, you'll encounter some Bladeballs, so take them all out and go to the opposite side, where you'll find a pad with a hologram of the tourbot. Step on it while holding the bot to make the door open, then head into the next room to see a bunch of lasers. There's a bunch of pads here that will offer a bunch of lore pertaining to the Ratchet universe, but just make your way past the lasers.
Hit the green button with your wrench, which will power off the lasers, then connect the two Grav Targets, starting with the one near the entrance. Ride the beam to the balcony above, then open the next door to the Natural History Wing, where you'll see a huge dinosaur-like creature. There is a crank bolt in the one corner that will change the positions of the Troglosaur's head and tail.
Do this and then jump onto the exhibit, where you'll see another tourbot pad by its raised tail. Jump onto this platform to open up the ventilation shaft. Traverse this area, being mindful of the fans, using the paths that are open. There isn't anything hidden other than some crates with regular bolts, so there's no need to explore here.
