Galaxy Zack Series by Ray O'Ryan, Colin Jack

4.23 · 82 ratings
  • Hello, Nebulon! (Galaxy Zack #1)
    #1

    Hello, Nebulon! (Galaxy Zack #1)

    Ray O'Ryan

    Rated: 4.02 of 5 stars
    · 14 ratings · published 2013

    Get to know Galaxy Zack—and his new home planet!In Hello, Nebulon!, Zack makes the big move from Earth... more

  • Journey to Juno (Galaxy Zack #2)
    #2

    Journey to Juno (Galaxy Zack #2)

    Ray O'Ryan, Colin Jack

    Rated: 4.14 of 5 stars
    · 10 ratings · published 2013

    Zack joins his school's Explorer's Club and visits Juno, a newly discovered planet of crystals. The group is split into pairs as they begin exploring, and Zack is less than thrilled when he is partnered with Seth Stevens, the Phase 2 bully! Seth is happy to let Zack do the work while he goofs off, so when Zack stumbles upon a really cool object, he hides it so he can show it to the Explorer's Club himself... more

  • The Prehistoric Planet (Galaxy Zack #3)
    #3

    The Prehistoric Planet (Galaxy Zack #3)

    Ray O'Ryan

    Rated: 4.17 of 5 stars
    · 6 ratings · published 2013

    Galaxy Zack blasts back to the past in this outer space chapter book adventure!A baby pterosaur can’t find his way home, so it’s up to the Nebulon Navigators to return him to the Prehistoric Planet. And when Zack’s dad is invited on the journey, Zack finds a way to go along too! But as they blast off on the super shuttle, they hear a strange noise. Is it the pterosaur, crying for his mama? No, it’s.. more

  • Monsters in Space! (Galaxy Zack #4)
    #4

    Monsters in Space! (Galaxy Zack #4)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 6 ratings · published 2013

    Zack learns that appearances aren’t everything when he has an up-close-and-personal monster encounter in this chapter book adventure.Zack is shocked when he goes to school one day and finds a monster in his seat! Who/what is this creature? At first Zack is scared, but he soon finds that this monster, Al, is kind and friendly. Zack and Al become fast friends, and Zack goes to Al’s planet and meets all kinds of other monsters... more

  • Three's a Crowd! (Galaxy Zack #5)
    #5

    Three's a Crowd! (Galaxy Zack #5)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 6 ratings · published 2013

    Zack finds out that two best friends are better than one in this chapter book adventure.Zack is thrilled when he finds out that his best friend on Earth, Bert Jones, is going to visit him on Nebulon. Zack can’t wait to show Bert around the new planet, as well as his new school. But when Bert meets Drake, Zack’s best friend on Nebulon, some jealousy starts to brew. Drake feels left out when Zack and Bert tell stories from Earth and share inside jokes... more

  • A Green Christmas! (Galaxy Zack #6)
    #6

    A Green Christmas! (Galaxy Zack #6)

    Ray O'Ryan, Colin Jack

    Rated: 4.33 of 5 stars
    · 6 ratings · published 2013

    Let it snow! Christmas is just a couple days away, and Zack can't wait to go back to Earth and have a white Christmas in Vermont. But with a cosmic storm in the forecast, the Nelsons have to cancel their travel plans and spend Christmas on their new home planet. Zack is really upset ... until the storm hits and green flakes start falling from the sky. Could they be ... snow?

  • A Galactic Easter! (Galaxy Zack #7)
    #7

    A Galactic Easter! (Galaxy Zack #7)

    Ray O'Ryan

    Rated: 4.17 of 5 stars
    · 6 ratings · published 2014

    Galaxy Zack has some “sweet” competition in this Easter-themed chapter book adventure!Zack and Drake venture to Gluco, the candy planet, for some Easter fun. Once there, the two friends decide to compete in activities, including an egg toss and a three-legged race. Zack remembers how he used to win all the Easter competitions on Earth, and he is determined to win them on Gluco, too. With the contest so close, Zack begins to wonder if he should cheat to ensure victory... more

  • Drake Makes a Splash! (Galaxy Zack #8)
    #8

    Drake Makes a Splash! (Galaxy Zack #8)

    Ray O'Ryan

    Rated: 4.25 of 5 stars
    · 4 ratings · published 2014

    Zack tries to help Drake learn to swim in this chapter book adventure—but is he in over his head?Zack is surprised when he discovers that his best friend Drake doesn’t know how to swim! With a little patience and some help, Zack has Drake splashing around in the water in no time. But swimming is another matter... more

  • The Annoying Crush (Galaxy Zack #9)
    #9

    The Annoying Crush (Galaxy Zack #9)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 3 ratings · published 2014

    The Super Advanced Robotic Assistant (SARA) develops an annoying crush on Zack in this Galaxy Zack chapter book adventure.Zack can’t wait to test out Sara, the new Super Advanced Robotic Assistant that his dad’s been working on. At first she’s great and super helpful! Sara helps Mom unpack clothes for her store at lightning speed. She plays catch with Luna. And she turns into a one-bot band for the twins... more

  • Return to Earth! (Galaxy Zack #10)
    #10

    Return to Earth! (Galaxy Zack #10)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 3 ratings · published 2015

    Zack is a planet-hopping pro—but a return to Earth results in some unexpected puppy trouble in the tenth Galaxy Zack chapter book adventure.Zack is headed back to Earth for the first time since moving to Nebulon. He can’t wait to see his best friend Bert and show his new friend, the former bully Seth Stevens, all around his old stomping grounds! Luna’s excited too. A little too excited. When the pooch escapes and goes missing, sightseeing plans take an unexpected turn... more

  • A Haunted Halloween (Galaxy Zack #11)
    #11

    A Haunted Halloween (Galaxy Zack #11)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 3 ratings · published 2015

    Zack doesn’t think ghosts exist—but a haunted Halloween might change his mind in the eleventh Galaxy Zack chapter book adventure.Zack absolutely, one hundred percent does not believe in ghosts—even when his friend Drake tells him that they are real. But as Halloween nears, weird things start to happen, and Zack begins to think that he might be haunted... more

  • Operation Twin Trouble (Galaxy Zack #12)
    #12

    Operation Twin Trouble (Galaxy Zack #12)

    Ray O'Ryan

    Rated: 4.00 of 5 stars
    · 3 ratings · published 2015

    Zack has to help his sisters make up after an out-of-this world argument in this twelfth Galaxy Zack chapter book adventure.Zack’s twin sisters are the best of friends. They’re never apart, share everything, and even finish each other’s sentences! But when the two get into an argument while visiting another planet, an astronomical fight ensues. Suddenly, Zack finds himself stuck in the middle of a tricky twin situation... more

  • Science Fair Disaster! (Galaxy Zack #13)
    #13

    Science Fair Disaster! (Galaxy Zack #13)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 3 ratings · published 2016

    Zack has his work cut out for him as he prepares for the Intergalactic Science Fair in the thirteenth Galaxy Zack adventure.When the Intergalactic Science Fair returns to Nebulon, the pressure is on for Sprockets Academy’s students to uphold their winning streak. Zack is sure he can win... more

  • Space Camp (Galaxy Zack #14)
    #14

    Space Camp (Galaxy Zack #14)

    Ray O'Ryan

    Rated: 4.33 of 5 stars
    · 3 ratings · published 2016

    Zack and his friends are off to space camp on a new planet in the fourteenth Galaxy Zack adventure.Camp Among the Stars! Summer vacation is finally here and Zack is pumped for space camp! He can’t wait to play galactic games, tell scary stories, and go on crazy camping adventures with new friends. But when there’s trouble between his cabin mates, it’s up to Zack to bring everyone together... more

  • Ready, Set, Blast Off! (Galaxy Zack #15)
    #15

    Ready, Set, Blast Off! (Galaxy Zack #15)

    Ray O'Ryan

    Rated: 4.50 of 5 stars
    · 2 ratings · published 2017

    Zack and his friends zoom across the galaxy for the Interstellar Space Race in this fifteenth Galaxy Zack adventure.When the Sprockets Academy Zoomers enter the Intergalactic Space Race, Zack and his friends are in for an epic race adventure across the galaxy. It’s time to navigate through an underwater maze, fly around planetary rings, and blast through the stars! But when trouble stirs within the team, Zack must take charge... more

  • Cosmic Blackout! (Galaxy Zack #16)
    #16

    Cosmic Blackout! (Galaxy Zack #16)

    Ray O'Ryan

    Rated: 4.50 of 5 stars
    · 2 ratings · published 2017

    In this sixteenth Galaxy Zack adventure, Nebulon falls into a complete cosmic blackout!Zack loves everything about his new planet, Nebulon. There’s Ira, his Indoor Robotic Assistant, who makes him delicious food every day. There’s Zack’s hyperphone for playing games with friends. Even his desk at school is pretty grape. But Zack wakes up one morning to discover that everything awesome about his new planet is out of order. Nebulon has fallen into a complete cosmic blackout... more

  • Snow Place Like Home (Galaxy Zack #17)
    #17

    Snow Place Like Home (Galaxy Zack #17)

    Ray O'Ryan

    Rated: 4.50 of 5 stars
    · 2 ratings · published 2018

    There’s snow place like home in this seventeenth Galaxy Zack adventure!The Nelsons are ready for a galactic winter vacation on a great new planet! And Zack’s best friend, Drake, is coming too! From solar-snowboarding, hydro-freeze fishing, supreme snowball fights, and epic ice forts, the boys can’t wait to dive into the winter games. But at the resort, Zack realizes there are a bunch of hurdles he wasn’t prepared for... more

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