12 books in series

Isaac Asimov's New Library of the Universe

Isaac Asimov's New Library of the Universe is a 12-book series with 12 released primary works first released in 1960 with contributions by Isaac Asimov, Greg Walz-Chojnacki, Frank Reddy, Richard Hantula, and Francis Reddy.

Our Milky Way and other galaxies
Asteroids
Comet!: The story behind Halley's comet
The Future in Space
Global Space Programs
Mercurio / Mercury
Pluton Y Caronte / Pluto and Charon
Mars
Venus: A Shrouded Mystery
Discovering Comets and Meteors
A Distant Giant: The Planet Neptune
A Double Planet?: Pluto and Charon