Fermi paradox

its origin and nature

Francis Crick

Life--Origin (Biology) Extraterrestrial beings Panspermia Fermi paradox

Origin

Stephen Baxter

English fiction--Science fiction English fiction--Alternative histories Fermi paradox Multiverse--Fiction

Time

Stephen Baxter

English fiction--Science fiction Fermi paradox

Space

Stephen Baxter

English fiction--Science fiction Fermi paradox Replicators--Fiction Alien encounters--Fiction

why complex life is uncommon in the Universe

Peter D. Ward; Donald Brownlee

Astrobiology Extraterrestrial beings Fermi paradox

are we alone in the universe?

Paul Davies

Extraterrestrial beings Extraterrestrial beings Unidentified flying objects Fermi paradox