Ray O Ryan Books

Space camp
Space camp

By Ray O Ryan

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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 tr...

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Return to Earth
Return to Earth

By Ray O Ryan

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"Zack is headed back to Earth for the first time since moving to Nebulon. He can't wait to see Bert and show his new friend, the former bully Seth Stevens, all around his old stomping grounds. When...

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Cosmic Blackout
Cosmic Blackout

By Ray O Ryan, Jason Kraft

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Three's a crowd!
Three's a crowd!

By Ray O Ryan

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Zack is thrilled when his best friend on Earth, Bert Jones, visits for the weekend. But when Zack introduces Bert to Drake, his best friend on Nebulon, trouble begins! Zack is thrilled when his be...

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Drake makes a splash!
Drake makes a splash!

By Ray O Ryan

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When summer arrives on Nebulon, Zack discovers that his best friend, Drake, is afraid to learn to swim and decides to teach him before they go on a trip to water-covered planet Araxie. When summer...

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Science fair disaster!
Science fair disaster!

By Ray O Ryan

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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. But when his project malfunction...

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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