The Black Cloud
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The Black Cloud is a 1957 science fiction novel by British astrophysicist Fred Hoyle. It details the arrival of an enormous cloud of gas that enters the Solar System and appears about to destroy most
Cover of the first edition
Superorganism
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A superorganism, or supraorganism, is a group of synergetically interacting organisms of the same species. A community of synergetically interacting organisms of different species is called a holobion
The Black Cloud
…a life-form with a degree of intelligence. The scientists try to communicate with the cloud, and succeed. The cloud is revealed to be an alien gaseous superorganism, many times more intelligent than humans, which is surprised to find intelligent life-forms on a solid planet. It reconfigures itself to allow sunlight…
A mound built by cathedral termites
A coral colony