I thought this was going to be yet another cookie-cutter space opera, boy was I wrong! This was fantastic.
...it hits the sweet spot between hard-science and imaginary scifi science. The hard science is very hard, from the perils of centrifugal spin-gravity in combat spacecraft to the destructive potential of ultra-fast kinetic energy weapons. The scifi science is made-up, but it has the key properties which all-too-often are missing: Internal Self-Consistency and Attention To Unintended Consequences. This makes the scifi science semi-hard as well...
...The characters are memorable and engaging...
...I have read this series out to book #6. It just keeps getting better and better. Buy these books.
Winchell D Chung
Founder, Atomic Rockets Website
http: //projectrho.com/public_html/rocket/
Amazon Review, September 25, 2019