Here is the book cover for the sixth book in the Mission series! I like that old-fashioned space rocket. :) Anyway, The book is on Amazon's website and I'll be uploading it to their sites tomorrow. All I have to do now is wait for Amazon to publish it fully and give me the link to the page and we're set!
UPDATE!! It is published on Amazon. Here is the link! https://www.amazon.com/dp/B01N3MA6I2