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THE SCIENCE FICTION ARCHIVEExplore by theme ↗

Alien life

Encounters with life beyond our own world.

All books Space opera Time travel Artificial intelligence Alien life Cyberpunk Space exploration Dystopian worlds More themes +

3,897 books in alien life

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Balanced rating combines the average and the number of ratings; small samples carry less weight. How ranking works ↗

Polaris

Mindee Arnett

4.0(1)Open Library rating out of 5

Postman in Outer Space

Guillaume Perreault; Francoise Bui

4.0(1)Open Library rating out of 5

Power lines

Anne McCaffrey; Elizabeth Ann Scarborough

4.0(1)Open Library rating out of 5

Power Play

Anne McCaffrey; Elizabeth Ann Scarborough

4.0(1)Open Library rating out of 5

Space opera2006

Pretender (Foreigner 8)

C. J. Cherryh

4.0(1)Open Library rating out of 5

Princess from Another Planet

Mindy Schanback

4.0(1)Open Library rating out of 5

Principal Strikes Back

Jarrett Krosoczka

4.0(1)Open Library rating out of 5

Prison Ship

Martin Caidin

4.0(1)Open Library rating out of 5

Probability space

Nancy Kress

4.0(1)Open Library rating out of 5

Probability sun

Nancy Kress

4.0(1)Open Library rating out of 5

Probe

Carole Nelson Douglas

4.0(1)Open Library rating out of 5

Problemski Hotel

Dimitri Verhulst

4.0(1)Open Library rating out of 5

Project Beta

The Story of Paul Bennewitz, National Security, and the Creation of a Modern UFO Myth

Greg Bishop

4.0(1)Open Library rating out of 5

Project Terra

crash course

Landry Q. Walker

4.0(1)Open Library rating out of 5

Space opera2023

Promises Greater Than Darkness

Charlie Jane Anders

4.0(1)Open Library rating out of 5

Space opera1951

Puppet Masters

Robert A. Heinlein

4.0(1)Open Library rating out of 5

Purgatory

A Chronicle of a Distant World

Mike Resnick

4.0(1)Open Library rating out of 5

Push

Eve Silver

4.0(1)Open Library rating out of 5

Space opera2007

Pyramid Power (Tail of the Moon)

Eric Flint

4.0(1)Open Library rating out of 5

Pyramid scheme

Dave Freer; Eric Flint

4.0(1)Open Library rating out of 5

Space opera2020

Queen

A Chronicle of the Sibyl's War

Timothy Zahn

4.0(1)Open Library rating out of 5

Queen of Mars

Al Sarrantonio

4.0(1)Open Library rating out of 5

Quicksilver

R. J. Anderson

4.0(1)Open Library rating out of 5

Radiant

James Alan Gardner; Katherine Gibson

4.0(1)Open Library rating out of 5

Theme matches come from subjects on a work or its English editions, or a cited editorial review. Each book’s discovery notes show the evidence.