The Consumption

I am currently working on a science fiction book about the galaxy Andromeda thousands of years in the future where humans are extremely advanced life forms who conquered Andromeda long ago when they began the third space revolution. A race called Kiiren, but are less formally known as space-eaters, are discovered on the border of the galaxy. They feed on void, destroying space every time they eat, which is destroying planets and threatening the galaxy. Different races throughout the whole galaxy need to join together in order to eliminate the threat. The book shows the point of view for all of them as they eventually meet and fight the space-eaters. Here's the first like 20 pages of it. What do you think of it so far?