Nova Academy: Heroes & Villains is once again available in paperback print (8.25" x 5.25"). You can buy it by clicking the link. My first book has sold over 4,500 copies (that is solely on Amazon.com with no professional marketing of any sort). It has a respectable 4.3 out of 5 stars and I can tell you it is a fun read if you like superhero stories.
Earth Interstellar paperback will be available very soon for pre-order.