It is licensed under CC BY-SA. This means you can do whatever you want with it, even sell it, so long as I am credited as the original creator. If you remix, adapt, or build upon the material, you must license the modified material under identical terms. Terms of the license can be found at creativecommons.org/licenses/by-sa/4.0/.
Chris Ferrie is the #1 science author for kids, a professor and award-winning physicist. He is the author of over one hundred science books for both adults and children. He lives in Sydney, Australia with his wife and four children. You can visit Chris at csferrie.com.
This book was written by Chris Ferrie. The illustrations were created by prompting v3 of the midjourney generative art model with the text on each page. The resultant images were curated and remixed by Chris Ferrie and then painted over by Chris Ferrie with the digital art platform Affinity.
You can download the PDF here: https://tinyurl.com/d3u9k3at
For convenience, I'd upload the book to Kindle Direct Publishing, which means you can easily purchase a printed copy. Note that the price is minimum allowed by KDP, which presumably means that is the cost of production. Click here: https://a.co/d/7iNn4MN.