The Currents of Space
Encyclopedia
The Currents of Space is a science fiction
Science fiction
Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 novel by the American writer Isaac Asimov
Isaac Asimov
Isaac Asimov was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000...

. It is the second (by internal series chronology) of three books labeled the Galactic Empire series
Isaac Asimov's Galactic Empire Series
The Galactic Empire Series is a science fiction series containing three novels and one short story by the American author Isaac Asimov...

, though it was the last of the three he wrote. Each occurs after humans have settled many worlds in the galaxy — after the second wave of colonization that went beyond the Spacer
Spacer (Asimov)
In Isaac Asimov's Foundation/Empire/Robot series, the Spacers were the first humans to emigrate to space. About a millennium thereafter, they severed political ties with Earth, and embraced low population growth and extreme longevity as a means for a high standard of living, in combination with...

 worlds — and before the era of decline that was the setting for the original Foundation series. Each of the three is only loosely connected to other works, being separated by a fairly large span of centuries.

Plot summary

The story takes place in the backdrop of Trantor
Trantor
Trantor is a fictional planet in Isaac Asimov's Foundation Series and Empire Series of science fiction novels.Trantor was first described in a short story by Asimov appearing in Early Asimov Volume 1. Later Trantor gained prominence when the 1940s Foundation Series first appeared in print . Asimov...

's rise from a large regional power to a galaxy-wide empire
Galactic Empire (Asimov)
In Isaac Asimov's Robot/Empire/Foundation series of novels, the Galactic Empire is an empire consisting of millions of planets settled by humans across the whole Milky Way Galaxy. Its symbol is the Spaceship and Sun logo.-Author's creation of the empire:...

, unifying millions of worlds. This story occurs around the year 11,000 AD (originally 34,500 AD, according to Asimov's early 1950s chronology), when the Trantorian Empire encompasses roughly half of the galaxy.

The independent planet Sark exploits the planet Florina and derives its great wealth from "kyrt", a versatile and fluorescent fiber that can only be grown on Florina. The relationship between the two planets is analogous to the situation between European imperial powers and their colonies during the 19th century, where the Florinians are forced to work in kyrt fields and are treated as an inferior race by the Sarkites. Attempts to break the Sark monopoly and grow kyrt on other worlds have thus far been unsuccessful. Meanwhile, Trantor would like to add these two worlds to its growing empire.

There is a hidden irony in Sark's dominion over Florina: clear parallels to the American South growing cotton with slave labor. The Florinians are one of the lightest-skinned people in a galaxy where racial categories seem to have been forgotten, except by the people of Sark. One of the characters, Dr. Selim Junz, comes from Libair, a planet with some of the galaxy's darkest-skinned people, and feels sympathy for the Florinians. (The planet Libair takes its name from Liberia
Liberia
Liberia , officially the Republic of Liberia, is a country in West Africa. It is bordered by Sierra Leone on the west, Guinea on the north and Côte d'Ivoire on the east. Liberia's coastline is composed of mostly mangrove forests while the more sparsely populated inland consists of forests that open...

, a country in Africa, which would explain a dark-skinned genetic inheritance. Liberia was also settled by freed slaves from America.) Also, Asimov chose the name of "kyrt" to be rather similar to "cotton", and he explains that it contains cellulose.

The possible destruction of Florina is predicted by Rik, a "spatio-analyst", who has had his mind manipulated by a "psychic probe" device, resulting in gross amnesia
Amnesia
Amnesia is a condition in which one's memory is lost. The causes of amnesia have traditionally been divided into categories. Memory appears to be stored in several parts of the limbic system of the brain, and any condition that interferes with the function of this system can cause amnesia...

. When Rik gradually starts remembering his past, it produces a political crisis involving Sark, Florina, and Trantor. Rik, a native of the Earth
Earth (Foundation universe)
This article is on the history of Earth, as presented in Isaac Asimov's Foundation Series, Robot Series, and Empire Series.- Ancient :* 1982: Susan Calvin born...

, had discovered that Florina's sun is about to explode into a nova
Nova
A nova is a cataclysmic nuclear explosion in a star caused by the accretion of hydrogen on to the surface of a white dwarf star, which ignites and starts nuclear fusion in a runaway manner...

 because it is being fed carbon by one of the outer-space "currents of space", supposedly rather like the currents of the ocean.

It is also revealed at long last that the special energetic wavelength of light that is being emitted by Florina's sun is what causes the very high-quality kyrt fiber to grow there. This is the explanation why kyrt cannot be grown on other planets – since stars going nova are really quite rare, and stars with habitable planets that go nova are rarer still.

Because losing Florina would mean losing the only source of its vast wealth, there is strong resistance from Sark to accept the message. However, when it is explained that the wealth is already lost since the conditions that enable kyrt to grow can be easily duplicated anywhere now that they are understood, they become more amenable. When Trantor offers to buy out the entire planet for a very high price, the offer is readily accepted.

Even though there is not yet a full Galactic Empire, Trantor does control the now largely radioactive Earth. The idea of evacuating Earth is mentioned, but that is strongly rejected by Rik. He insists that it is the original planet of the human race, though this is not generally accepted.

Reception

Galaxy
Galaxy Science Fiction
Galaxy Science Fiction was an American digest-size science fiction magazine, published from 1950 to 1980. It was founded by an Italian company, World Editions, which was looking to break in to the American market. World Editions hired as editor H. L...

 reviewer Groff Conklin
Groff Conklin
Edward Groff Conklin was a leading science fiction anthologist. He edited 40 anthologies of science fiction, one of mystery stories , wrote books on home improvement and was a freelance writer on scientific subjects as well as a published poet...

 described the novel as "one of Asimov's lesser efforts, but still considerably above the average space opera." Boucher
Anthony Boucher
Anthony Boucher was an American science fiction editor and author of mystery novels and short stories. He was particularly influential as an editor. Between 1942 and 1947 he acted as reviewer of mostly mystery fiction for the San Francisco Chronicle...

 and McComas
J. Francis McComas
Jesse Francis McComas was an American science fiction editor. McComas wrote several stories on his own in the 1950s using both his own name and the pseudonym Webb Marlowe....

 found Currents an advance from Asimov's previous work, describing it as "first-rate entertainment [that] is so much more adroitly plotted than Asimov's previous ventures in this vein that it stands up as an intricate and constantly surprising spy-suspense story

Scientific accuracy

The idea of "currents of space" causing suns to explode is creative, but has been thoroughly discredited by modern-day science in the decades following the writing of The Currents of Space. There are indeed two types of stellar fusion, one involving the presence of carbon atoms as a kind of catalyst
CNO cycle
The CNO cycle is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain. Unlike the proton–proton chain reaction, the CNO cycle is a catalytic cycle. Theoretical models show that the CNO cycle is the dominant source of energy in stars...

 - and the other involving the proton-proton reaction. These processes are a simple result of the star's size and temperature, with only quite large stars using the carbon cycle (the CNO cycle
CNO cycle
The CNO cycle is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain. Unlike the proton–proton chain reaction, the CNO cycle is a catalytic cycle. Theoretical models show that the CNO cycle is the dominant source of energy in stars...

). It is now believed that stars likely to have habitable planets
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia...

 cannot go nova, though they will become red giant stars at the very end of their lifetimes
Stellar evolution
Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years to trillions of years .Stellar evolution is not studied by observing the life of a single...

.
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