Arrival
Because Planet Periculum was declared a hostile territory, the ship didn't need to exit warp outside the star system and carry on at a slower pace inwards.
Instead they just exited warp right outside the planet's atmosphere.
Alex looked outside the window on the side of the ship and spotted an exotic planet covered in all different types of environments.
There were rocky, mountainous regions; huge forested areas spanning hundreds of kilometres; a huge ocean circling around the whole globe etc.
If you could think of an exotic environment, the chances were that it existed on this planet.
Sensing the student's questions about the planet, Professor Will answered: "When floodgates appear, the energy of the Primordial Expanse also floods out from the other side, changing the environment drastically to better suit the beasts that cross over."