Trip to the Stars

Trip to the Stars is a side quest in the Fallout 4 add-on Nuka-World.

Detailed walkthrough
Gather 5 spacesuit costumes from the Vault-Tec: Among the Stars area of the Galactic Zone and bring them to Dara Hubbell. Follow the Hubologists to the Nuka-World junkyard to clear it from robots (either alone or with their help) or tell them the player character has cleared it already. For this Dara will reward them with the Hub's Alien Blaster.

Once cleared, collect the power distributor and some fusion cores from the junkyard and go to the spaceship ride. Adding three cores, as Dara suggests, will result in a good end to the quest. However, adding the fourth core will result in the death of the Hubologists. Once at least 3 cores and the distributor are placed, the Hubologists will enter the spacecraft. Follow them inside and activate the ride to finish the quest.

If one chooses to not kill them, Dara gives them 100 ammo for the alien blaster and all of the Hubologists relocate to the large barn northeast of the spaceship.

5-7 fusion cores can be found in the area: If one inserts 4 fusion cores instead of 3, Dara and the rest of the Hubologists will explode on the spaceship ride. Either way, the quest will be completed.
 * In the subway car with a lantern hanging by the door. The car is at the bottom of the ramp from the spaceship. The core is on a shelf to the right as you enter.
 * Inside a large tea cup on a ledge above the aforementioned subway car, south of the spaceship.
 * In the nearby barn, there is a generator with a core.
 * In the same barn, the hanging gondola car has a core sitting on its floor. one may need power armor and a jet pack to reach it although a carefully timed jump from the floor above works too.
 * In a mounted bear's mouth, in a tunnel below the central pile with some crickets, ants and landmines.
 * Possibly two fusion cores from a sentry bot patrolling the area just outside the spaceship.

Bugs

 * After giving the five spacesuits to Dara, wildlife attacking the camp (crickets and/or white rats) in waves can wreak havoc and cause the Hubologists to scatter and die. Dara will then no longer speak to you and the quest cannot proceed to the junkyard.
 * If you manage to get the spacesuits before the quest is given to you, you will be stuck trying to find them ultimately resulting in you having to use cheats to get that part done. [Update: Reportedly if you do have five (or more) spacesuits in your inventory you can give them to Dara and proceed even if the quest tracker indicates that you have found less than five spacesuits.]
 * After bringing back the spacesuits and Dara telling the other Hubologists to suit up and arm themselves, the Hubologists run out as if they're holding their weapons at the ready, though their hands appear empty. When attacked they will fire with invisible laser pistols, with the rays coming from a random point in their body (toes or back for example). Upon death their weapon will become visible again and drops on the ground.
 * If the player hacks the sentry bot before completing this quest and brings it to the Hubologist Camp, it will attack the Hubologists. If the bot is moved elsewhere and shut down, it will teleport to it's original location in the junkyard when the quest advances to clearing out the junkyard. Shutting it down is not sufficent, it must be killed (by attacking or self-destructing)
 * If the player installs the fusion core before talking to Dara after her speech, the quest may progress past stage 805 ("Install a power distributor") without the power distributor actually being installed.
 * If the Hubologists have not entered the space ship before activating the ride, the quest might not trigger completion.
 * Upon powering up the ride and finishing the quest, the audio for the ride will not stop, no matter what choice you made during the quest. The only way to fix this is loading a save.
 * If the player is wearing one of the space suits upon returning to give them to the Hubologists, when he/she gives them to Dara she will proceed as if she has received them and the Hubologists will put on space suits in the ensuing scene, but the suits will not have been removed from the player's inventory. Nor will the player be able to remove his/her own suit via the Pip-Boy or put on another outfit. The player must drop the suits in order to take his/hers off.
 * If four power cores are inserted, and the ride is started, but then shut down as soon as it is possible, the ride will slowly come to a halt, with the very same audio, and yet everyone will still inexplicably die, despite not moving.

Gallery
Путешествие к звёздам Подорож до зірок