Groups comparison

Space aliens (Extraterrestrials) - 1971 to 2024
Features (sentient) extraterrestrial alien creatures.

Starfish aliens - 1990 to 2024
Sentient (and possibly even non-sentient) alien beings that reject the all too common similarities with human or animal appearance and instead resemble little to nothing found on Earth.

Greys (Zeta Reticulians;Roswell aliens) - 1994 to 2014
A diminutive humanoid alien extremely commonly seen in various media dealing with aliens, conspiracy theories, and so forth.

Martians - 1994 to 2016
Alien lifeforms native to the planet Mars.

Alien animals - 1996 to 2019
Non-sentient alien beings that resemble little or nothing found on Earth.

Deep space creatures (Deep space dwelling lifeforms) - 1998 to 2015
Features creatures that live in deep space without aid of machines or other artificial means of surviving in the environment.

aliens
starfishaliens
greys
martians
alienanimals
spacecreatures
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