Chapter 40

Chapter 40 is the fortieth chapter of the Astra Lost in Space manga. It is the third chapter of the Galem Arc and, in the compiled volumes, the third chapter of the fifth volume.

Synopsis
111 days have passed since the students of Group B-5 have been stranded in deep space. Onboard the Astra (ship), they soon approach their final destination, Planet Galem. Aries remarks she has achieved her goal of becoming friends with everyone on board the ship as they land on the planet.

On the ground, they realize that the planet is made up of huge amounts of bio-luminescent species on the planet. The group splits up to collect food, water, and other supplies, with Paulina dryly remarking that they are very used to this. Kanata and Aries are impressed by the wildlife and diversity of species on the planet, and they both wonder what their lives will be like when they return home.

As Kanata continues to forage, he continues to ponder the idea of who the killer is, but tries to shove the idea into the back of his mind, as he feels like everyone has gotten along so well, that even any potential killer has formed a special bond with them by this point. His main worry now is trying to get home and he secretly hopes that the idea of a killer never existed.

As he returns back to the ship, a wormhole appears right next to him seemingly out of nowhere. He barely has time to react and immediately sprints to a nearby cave and runs far enough inside until the wormhole disappears. He runs into Aries, who came from an entrance from another side of the cave. He soon realizes that the killer is still among them, and is willing to kill everyone else on the planet before taking the ship for themselves. However, they must use wormhole technology away from the ship in order to avoid damaging the ship. Pondering on it for a while, he soon realizes he has figured out who the killer is, and begins to devise a plan to capture the killer.