I liked it. I never struggled to get into the story, which is quite surprising, you may know sci-fi and I are not the greatest friends. I never got bored. All about the cubes was a good idea. 
 My problem is that I couldn't connect much with Aly, am I the only one? he's a good guy though. And yes, for me the book is predictable but I'm used to it with YA books. 
 "Gerardo are you going to read the next book?" Yes. 
 P.S I WISH THIS HAD A MAP. IT WOULD BE GREAT TO SEE ALL THE PLANETS AND ASTEROIDS TOGETHER. AND ALSO BC I LOVE MAPS. MAPS ARE GREAT.