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The Black Cloud

The Black Cloud
THBLCKCLDH1957.jpg
Cover of the first edition
Author Fred Hoyle
Cover artist Desmond Skirrow
Language English
Published 1957 William Heinemann Ltd
Media type Print (book)
ISBN

The Black Cloud is a science fiction novel by British astrophysicist Fred Hoyle. Published in 1957, the book details the arrival of an enormous cloud of gas that enters the solar system and appears about to destroy most of the life on Earth by blocking the Sun's radiation.

In 1964, astrophysicists on Earth become aware of a cloud of gas and dust, initially thought to be a Bok globule, that is heading for the solar system. The cloud, if interposed between the Sun and the Earth, could wipe out most of the life on Earth by blocking solar radiation and ending photosynthesis. A cadre of astronomers and other scientists is drawn together in Nortonstowe, England, to study the cloud and report to the British government about the consequences of its presence.

The cloud unexpectedly decelerates as it approaches and comes to rest around the Sun, causing disastrous climatic changes on Earth and immense mortality and suffering for the human race. As the behaviour of the cloud proves to be impossible to predict scientifically, the team at Nortonstowe eventually come to the conclusion that it might be 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 to return to the Earth and humanity is saved.

Though its ill-effects on humanity have ceased, several governments are mistrustful of the cloud and prepare a nuclear attack upon it. When the scientists alert the cloud of this plot, it turns the missiles back upon their senders but does not otherwise retaliate. When the astronomers ask the cloud how its lifeform originated, it replies that they have always existed. One of the characters suggests this is incompatible with the Big Bang theory.

The cloud announces that another nearby (by the cloud's standards) intelligent cloud has suddenly stopped communicating and may have vanished. This has apparently happened many times before and is a long-standing mystery to the clouds; the cloud therefore decides to leave the Solar System to investigate. During their last few days of communication two of the scientists try to learn some of the cloud's vast store of knowledge through visual signals, in order to gain further insights about the Universe. Both of them die in the attempt.


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