9 books in series

Isaac Asimov's New Library of the Universe

Isaac Asimov's New Library of the Universe is a 9-book series with 9 primary works first released in 1967 with contributions by Isaac Asimov, Greg Walz-Chojnacki, Richard Hantula, and Francis Reddy.

Our Milky Way and other galaxies
Asteroids
The Future in Space
Venus: A Shrouded Mystery
Comet!: The story behind Halley's comet
Mercurio / Mercury
Mars
Pluton Y Caronte / Pluto and Charon
Global Space Programs