Ranked: Not Alone Out There After All? Alien Life Of Various Kinds

This is a subjective Ranked version of Intriguing Connections: Not Alone Out There After All?  Alien Life Of Various Kinds

These are books that discuss life, out side Earth.

Philosophy:

1. The Meaning of Human Existence by Edward O. Wilson
2. The Beginning of Infinity: Explanations That Transform the World by David Deutsch

Fiction:

1. The Hitchhiker’s Guide To The Galaxy by Douglas Adams (The Ultimate Hitchhiker’s Guide To The Galaxy)
2. The Restaurant at the End of the Universe by Douglas Adams (The Ultimate Hitchhiker’s Guide To The Galaxy)
3. Life, the Universe and Everything by Douglas Adams (The Ultimate Hitchhiker’s Guide To The Galaxy)
4. The Three-Body Problem by Cixin Liu (The Three-Body Problem Series)
5. The Dark Forest by Cixin Liu (The Three-Body Problem Series)
6. Hard Duty by Mark E. Cooper
7. Death's End by Cixin Liu (The Three-Body Problem Series)
8. First Conquest by David VanDyke
9. Rendezvous with Rama by Arthur C. Clarke
10. Alien Hunters by Daniel Arenson
11. So Long, and Thanks for All the Fish by Douglas Adams (The Ultimate Hitchhiker’s Guide To The Galaxy)
12. Young Zaphod Plays It Safe by Douglas Adams (The Ultimate Hitchhiker’s Guide To The Galaxy)
13. Charlie and the Great Glass Elevator by Roald Dahl
14. The Complete Stories and Poems by Edgar Allan Poe