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Liam describes the feeling of being launched into space like being scrunched up and then let loose again. Once the rocket passes through the atmosphere, Liam receives word from control down below, explaining that a small glitch means he must push a button to release the outer panels and reveal a view of space. Everything goes well at first, until the other kids start playing around and competing over who gets to push the buttons to eject the Dandelion. As a result, they push the buttons in the wrong order and don’t release the Dandelion properly, which sends the rocket twirling off toward the moon. Earth is visible for a while, but then it isn’t, and Liam receives an alert that the systems have permanently failed. To calm down the others, he starts listing things he remembers about home, and the others eventually fall asleep. Liam goes down through the hatch to the Dandelion, which has massive windows and provides a much better view. Florida soon joins him, and she points out that they’re staring at the moon.
Florida remembers what happened to Apollo 13 and suggests going around the moon as a way to propel the rocket back toward Earth. Liam thinks the idea might work. Max can’t handle the idea that the mission is a failure, and insists on ejecting the Dandelion immediately, but Liam knows they must wait until they’re facing Earth if they’re going to live. He tries to chase Max down but finds that impossible, so he creates a diversion instead. First, they play magnetic Monopoly, followed by hide-and-seek. Hasan disappears, and Samson Two begins to insist that they must be in a simulation and not really in space at all.
After leaving the rocket to look for Hasan, Liam realizes that he forgot to tether himself. He must crawl back into the hatch by holding onto the rivets on the rocket. When he comes back inside, he has that same brand-new feeling he got on the Cosmic, only amplified. Hasan is found sleeping inside a cabinet, and Max finds that he’s okay with losing a game for once. Samson Two gets to work calculating the rocket’s trajectory, while everyone eats space food. At the same time, Max starts to pee, and then the others do as well. Soon they’re all laughing so hard that they float up to the ceiling.
When the rocket goes around the dark side of the moon, it’s as though the moon disappears, until they realize that it’s still there, just completely black. Eventually, the rocket makes its way around the moon, and Earth becomes visible again. Seeing the moon from that angle is astonishing, and all Liam can think about is home.
Samson Two calculates that the rocket will gain more speed if they go around the moon again, and by the end of the second trip, the kids don’t want to go back to Earth anymore. Everyone agrees that space is better because it has no expectations or parents yelling at them. Liam agrees to go around the moon a few more times, but reminds the kids that Earth is their home. However, they have time for a quick stop on the moon’s surface first.
Liam wants the kids to have one truly amazing memory of their time in space so that when they’re back on Earth and times are hard, they can look to their experience in space of having fun and being a kid. He stays behind in the Dandelion while the others board the command module and float to the moon’s surface. At that point, Liam feels more alone than he has ever felt, and he’s the only person on the dark side of the moon. As he drifts around the moon, he considers how small he truly is for the first time in his life. Somehow, Liam’s phone picks up a signal, and his dad immediately calls, asking where he is and if he needs to be picked up. Liam insists that he’s fine, and his dad reminds him to bring home the St. Christopher statue. Liam puts his phone away to focus on getting the command module re-docked onto the Dandelion.
The kids return from the moon and tell Liam they left a surprise for him there. The crew orbits the moon one last time before heading back.
The narrative circles back to the point at which the novel opened: They’re orbiting Earth, waiting for the right moment to enter its atmosphere. When it’s time, they all press the button together.
The next thing anyone knows, they’re on the ground in the middle of Siberia, surrounded by hungry wolves. Florida tries to fight them off, throwing Liam’s statue at them, but they all climb back into the hatch while Liam tries to call his father. When he gets through, Liam’s dad admits that he knows Liam isn’t at the Lake District, but he thinks Liam is joking when he says he’s in Siberia, until he uses Liam’s phone location to track him. Soon, Dr. Drax arrives with food and blankets, as well as forms for them to sign promising not to reveal the mission to anyone. She makes everyone surrender their phones as well.
Some time later, Liam is sitting at a shopping center while everyone gathers around screens watching the “first” child, Dr. Drax’s daughter, launch into space on the Infinite Possibility. The event is passed off as if no previous launch occurred, but when the daughter lands on the moon, she discovers a message. It’s the surprise the children on Liam’s crew left for him: A greeting they formed with their footprints, reading, “Hello, Dad.” Liam is touched by the message and considers it a tribute to all the dads out there, past, present, and future. His dad sees it, too, and Liam gets the sense that his dad somehow knows he was involved in the stunt.
In the story’s climax, each of the novel’s themes resolves. Liam proves himself as a true leader through thoughtful, selfless action. His thematic journey of Growing Up and Becoming Responsible culminates in a transformative moment when he leaves the rocket and returns alive: “I know it sounds mad, but I could see every one of their eyelashes. I wanted to count them. I could hear their breathing. I could hear eyelids opening and closing. Everything” (309). This experience, described as a moment of clarity, marks Liam’s emotional coming of age. Despite the thrill of space, he and the others begin to reflect on the contrast between life on Earth and the freedom of space, where they can be children without pressures or expectations. Liam imagines a space “where—in their brightest memories—they would always be kids” (327).
Just as Liam feels the most alone and vulnerable, his dad calls. That connection reminds Liam that even leaders occasionally need comforting. The theme of The Importance of Fatherhood closes with the kids writing “Hello, Dad” on the moon, a message for all the dads to ever exist, and one that ties together love, memory, and gratitude.
The setting of space continues to provide both awe and emotional grounding, particularly through its contrast with Earth. In one quiet, reflective moment, Liam floats down into the Dandelion to look for Earth. He thinks he sees it until Florida corrects him, telling him he’s looking at the moon. This moment of confusion reflects the disorienting nature of space, but also how much Earth has come to mean to Liam. When they do see Earth, it’s a moment of deep reflection and relief: “There’s something about the way the Earth just sits there in the middle of all that blackness, with nothing holding it up, that makes you worry about it” (319). Earth is beautiful, fragile, and grounding, emphasizing how space, while wondrous, also reminds them of what truly matters. Even the dark side of the moon becomes symbolic, as Liam describes it as “like a bite taken out of the sky” (317). This unusual beauty only deepens their understanding of both the vastness of the universe and their place in it, exemplifying the theme of How a Change in Environment Can Change One’s Perspective.
The final chapters continue to build on established motifs, particularly the use of space as a metaphor for perspective, identity, and emotional weight. Liam compares the moon’s surface to “the map of an imaginary realm in a Warcraft manual” (287), mixing gaming with reality to communicate the surreal nature of the experience. Earth becomes a powerful symbol of home: “Our Earth. Our home” (318). Philosophical reflection appears in the form of musing on gravity: “Gravity is variable […] Sometimes one boy can weigh more than the whole universe […] Everyone is massive” (351). This idea that each person carries their own emotional weight and significance mirrors Liam’s journey from pretending to be a leader to becoming someone others can rely on. Liam goes from pretending to be a father to embracing the fatherly role. He shows calm leadership and empathy under pressure. Max, previously arrogant and controlling, learns relief in losing; after losing a game of hide and seek, he’s happier afterward. Samson Two, who earlier insisted that the whole thing was a simulation, begins to accept reality. The kids ultimately come to trust Liam, following his lead as they prepare to return home. Liam’s symbolic role as Dad is no longer a ruse; it's a title he earned through compassion, sacrifice, and love.
The plot reaches its most intense and chaotic phase as the children’s inexperience leads to near-catastrophe. Despite Liam’s warnings, Max keeps trying to press the button that will eject the Dandelion. Eventually, the wrong sequence of button pushes sends the ship spiraling into space. The mood shifts from playful to panicked as they realize that they’ve failed to initiate the proper launch sequence. After this, tension heightens again when Samson Two attempts to open the airlock, and Max once again becomes fixated on pressing buttons. Humor and teamwork re-enter when they play Monopoly to calm their nerves. As they pass the dark side of the moon, it becomes a metaphorical passage of moving from crisis into growth. Their eventual return to Earth is a group effort: Liam steers, Samson Two calculates, and Max deploys the parachute. In the end, each child contributes to the survival of the team, proving how far they’ve all come.



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