20 books in series

Isaac Asimov's Library of the Universe

Isaac Asimov's Library of the Universe is a 20-book series with 20 primary works first released in 1967 with contributions by Isaac Asimov, Richard Hantula, Francis Reddy, and Greg Walz-Chojnacki.

Asteroids
Astronomy Today
The birth and death of stars
Colonizing the Planets and Stars
The Earth's Moon
The Future in Space
Is There Life in Outer Space?
Is There Life on Other Planets?
Mars
Mercurio / Mercury
Mythology And The Universe
Our Milky Way and other galaxies
Piloted Space Flights
Pluton Y Caronte / Pluto and Charon
Quasars, Pulsars and Black Holes
Rockets, Probes, and Satellites
Science fiction, science fact
Cover 7

El Sol

Unidentified Flying Objects
Venus: A Shrouded Mystery
The World's Space Programs