2 books in series

Outer Planets Trilogy

Outer Planets Trilogy is a 2-book series with 2 primary works first released in 2020 with contributions by Ben Bova.

#1
Uranus

#1 of 2 in Outer Planets Trilogy

2020 • 4 Readers • 308 pages • 3

#2
Cover 2

Neptune

#2 of 2 in Outer Planets Trilogy

2021 • 4 Readers • 240 pages • 2