If you have to create a creature, isn't choosing one that already exists cheating?


As for a planet, I'd choose either Mercury, Venus, or Mars.

The others are gas giants that don't have a solid surface, so that rules out most potential aliens right there.

Of course, you could have aliens that float in the atmosphere of a gas giant, too.


Really, you should just choose a planet, research what it's like, and figure out how an alien could live there. Then you should create your alien.

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"Science is the poetry of reality" ~ Richard Dawkins