In the year 2130, a very large object happens through the solar system. It is so large that at first astronomers take it for an asteroid, and even give a it name, Rama, as they would for any newly discovered astronomical body.
Closer investigation of Rama reveals a startling fact. The object is a cylinder, 50 kilometers long and 20 kilometers in diameter. It is a made thing, not a natural object. Furthermore, the creatures who built it clearly had advanced technologically far beyond humankind.
Wonders increase when the survey ship visits Rama. The survey crew easily passes through the air-locks—the doors are not locked—and find an inhabitable, self-contained world in the hollow interior. But there are no signs of the intelligent life that built Rama. The crew explores the vast interior for days, but Rama remains virtually the same enigma as when first discovered.
Because Rama will pass dangerously close to the sun, the survey crew must abandon the vehicle. But before leaving, they prevent the Hermians (the human colonists on Mercury) from destroying Rama. The Hermians fear that Rama is preparing to take up a strategic orbit from which the Ramans—finally out of hiding—could control the solar system.
But Rama behaves in no way expected by humans. After rounding the sun, from which it draws energy, Rama continues on its way out of the solar system, its destination and purpose unknown to man.
In our critical attention to Rendezvous with Rama, we should first note that it is an extraordinary example of hard SF in the Vernian tradition. The giant vehicle is neither fantasy nor literary prop. It is very real, from the triple air-locks outside to the cylindrical sea inside. Further, its structure and movements are, until the last chapters, consistent with known scientific principles.
Very late in the novel, Rama shows propulsion capabilities that defy Newtonian physics (“There goes Newton’s Third Law,” one character says in disbelief). Until then, though, Rama is big, but not bigger than the potential of human understanding.
At another level, the Wellsian one, Rama is about the human reaction to an alien encounter. With considerable skill, Clarke develops in the narrative the two most elemental responses to aliens: first, that they could only want to conquer us, or, second, they will come to save us from ourselves. The first attitude we see in the Hermians, who consider Rama a threat. The second attitude we see in Boris Rodrigo, who, as a member of the Fifth Church of Christ, Cosmonaut, sees Rama as a giant ark, come to save the faithful.
As we have seen, though, Rama is neither (or reveals itself as neither). It has no apparent concern for earth, and has traveled this way entirely for its own purposes. Humans must face the possibility that they are too insignificant to be noticed, and play a very minor role in the universe.
But Rama may after all be carrying a kind of message. One of the most intriguing features of the storyline is that Rama is so unprotected from would-be vandals and predators. Do the Ramans assume that any species technologically advanced enough to reach the ship in outer space would also be respectful enough to leave it unharmed? This interpretation would link technological advancement with cultural maturity—even moral progress.
Such a theme is consistent with the tempered scientific optimism that we see in Clarke’s work throughout his career. Commander Norton, who leads the survey team, sees his role in Rama as that of a privileged caretaker. He is determined to leave the vessel in good order, and finally allows his crew to cut into one of the interior structures only after it is obvious that there is no other way to enter it.
Identifying deeply with the technological triumph that Rama represents, Norton sees a future in which humankind will someday enjoy the same achievements. His experience aboard Rama leads him to conclude that “There was mystery here—yes; but it might not be beyond human understanding.” Or, perhaps the universe is not stranger than we can know, and the universal language of intelligent life is science and technology. Rama itself—the very fact of its existence—speaks to humankind in the universal language of science.
Our appreciation of the novel takes an even richer turn if we consider closely the Hermians and their efforts to destroy Rama. Although they are considerably advanced scientifically and technologically, their behavior is hardly enlightened. The Hermians are evidence that Clarke is neither one-sided in his understanding of science, nor simple-minded in his trust of scientific advancement. It is only luck that places the right person at the right place at the right time to prevent the Hermians from destroying Rama. Furthermore, the Hermians might have been right—Rama could have been setting a strategic orbit from which it could control, militarily, the solar system. We know for certain that it isn’t only after it doesn’t.
Commander Norton acts on a “gut” instinct that Rama means no harm—and he is right. The Hermians reason from scientific logic to determine that it does mean harm—and they are wrong. Is Clarke telling us that, finally, science is subsumed in the fallible human domain, where chance, impulse, and irrationality supersede scientific logic? Is Clarke, after all, a closet humanist, speaking for the integration of “gut” instinct and scientific logic (just as many scientists insist that science is both Intellect and Passion)?
Does the Hermian’s near-success tell us anything about the Ramans themselves? We could argue that perhaps Rama after all had a defensive system; there was simply no reason to use it, since Norton and his crew took care of the Hermian threat. Or perhaps we see an ultimate naivete at the far end of the spectrum of scientific development—have the Ramans forgotten that violence is possible? Or perhaps the Ramans are fatalists—”what will be will be.” Or do they in some intuitive way “know” that a Norton will always come along to prevent vandalism?
These issues are a quantum leap beyond shoot-outs in outer space (and yet the novel is no less entertaining than good space opera), and they enrich the novel considerably. When a science fiction novel poses questions of this sort, it is on its way to becoming literature.
EINSTEIN OR NOT?
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Before we can talk about Galactic Science Fiction, we must discuss interstellar travel, which is, after all, a highly improbable engineering feat. Science fiction writers and readers have nonetheless traveled the star lanes for several decades, and galactic SF flourishes even today.
Writers who pursue the interstellar themes have an important choice to make in setting up the premise of their stories. That is, do they observe the Einsteinian (for Albert Einstein) speed limit or not? In Einsteinian theory nothing can exceed the speed of light, which is approximately 186,000 miles per second. The closest star outside our solar system is Alpha Centauri, at a distance of four and a half light-years (a light-year being the distance that light would travel in a year). Most stars are considerably farther away.
Our galaxy, the Milky Way, is approximately 100,000 light-years in diameter, and the distance to the closest full-sized galaxy is 2.2 million light years. The distance to the edge of the universe is estimated at 15 billion light-years. After a point, of course, these measurements have little practical meaning for us.
If we assume the Einsteinian limitation in our interstellar travel, we will need a long, long time to get to even the closest star outside our own solar system. Writers working within the speed of light limitation have tried several approaches to interstellar travel.
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One method of travel is by ark, a giant spacecraft with a life-support system that can sustain the several generations needed to travel to a star. This type of craft is sometimes called a “generation-ship.” You will be looking at two examples of travel by generation ship, Heinlein’s “Universe” and Clarke’s Rendezvous with Rama
ACROSS THE DISTANCES OF SPACE
Heinlein’s work in particular suggests the problems inherent in the generation-ship, both as an engineering possibility and an SF convention. For one, the generations following the first, even though they may not believe in the mission in the same way that the founders did, must still live out their lives on the mission. Succeeding generations become discontent and rebel against the authority of the ship, even though they have, in reality, little choice but to continue the mission. As an SF convention, the generation- ship requires a shift of emphasis from the adventure of exploring new worlds to the social problems the generation-ship creates.
Another method for getting humans across the vast expanses of outer space is to put them in suspended animation so that they can sleep away the time needed to travel. This convention has been used in Alien and Planet of the Apes, just to name a couple of popular movies.
Another solution to the enormous distances lies in the paradoxes of Einsteinian space-time relations. According to the Einsteinian description of space-time, as we increase our speed, the time for the people traveling actually slows down in relation to the people who are not traveling (or who are stationary “relative” to the people who are traveling). At the speeds at which we normally travel, the differences are so tiny as to be incalculable. For example, if the trip that I take from work to home is, say, one billionth of second slower for me than it is for the person waiting at home, then there is no practical consequence.
However, as we approach the speed of light, the slowing of time for the traveler is far more noticeable. In fact, if we were traveling just under the speed of light to Alpha Centauri (four and one-half light-years away), we would experience a passage of time of only days. The people who remained stationary relative to our travel would, however, experience the passage of the entire four and one-half years. This kind of time slippage, however, will not soon be a practical problem for us. The energy needed to move an object at even a small fraction of the speed of light is so enormous as to be technologically unfeasible. We will not anytime soon be traveling near the speed of light.
We can, though, see the problem that such travel could represent for characters in SF. Travelers setting out on a journey of one hundred years are, in effect, saying good-bye forever to all the people they know. What may be only a trip of weeks for them will be a hundred years for the people who stay home. By the time the travelers reach their destination, their friends back home will be long dead and buried.
Through the ‘60s and ‘70s, Ursula K. Le Guin made excellent thematic use of this time slippage in her Hain novels. She even calls her starships NAFALs, an acronym, presumably, for not-as-fast-as-light. Her starships are opposed to those of other SF writers who have FTL ships (faster-than-light). Other SF writers have explored the psychological implications of this time slippage, one notable case being Joan Vinge in The Snow Queen (1984).
Perhaps the easiest way to engage in interstellar travel is to assume that the light barrier can be broken. Many SF writers simply put their starships into space-warp (or hyper-space, or whatever the writer chooses to call the device that enables FTL travel) and get their stories moving. (Star Trek travel is done at warp-speed). At one time or another, some of the best SF talents have, without too much concern for engineering plausibility, taken their characters from one star system to another at speeds greater than that of light.
Yet another way humankind has made it across the enormous distances of space is by teleportation through “gates.” Gates assume a technology that allows the alignment at one locus of two separate places, which may be light-years apart. The traveler merely walks through the “gate” (and, we assume, some sort of energy field) and goes from earth to Mars, or to Alpha Centauri–or to whatever location the machinery is adjusted.
The leap in imagination needed to accept travel by gating doesn’t seem so much greater than for accepting FTL. Still, we associate travel with some form of vehicle, and perhaps gating around the universe defies some deeper level of common sense. A number of pretty good stories have been based on gates (Heinlein’s Tunnel in the Sky, Clifford Simak’s Way Station, and the film, Stargate, to name a few), but gating has not been a major convention in science fiction. Since the days of Jules Verne, extraordinary voyagers have insisted on some appropriately dignified form of transportation—a ship.
GALACTIC CIVILIZATION AND ISSAC ASIMOV
One of the earliest galactic civilizations that FTL made possible is in Edmond Hamilton’s stories (1929-1930) about the Interstellar Federation. Headquartered on Canopus, the Federation sent out multi-species crews to patrol the galaxy and to right wrongs.
The name now associated with galactic empires is Isaac Asimov (1920-1992), whose Foundation Trilogy first pulled together a coherent and plausible (at least at the time) version of galactic civilization. Written between 1942 and 1949, the three volumes (Foundation, 1951; Foundation and Empire, 1952; and Second Foundation, 1953) portray a technological civilization in crisis. In Foundation we are introduced to Trantor, the capital city of the empire, itself a lesson in how civilization can become over-centralized. Literally billions of bureaucrats administer the empire in massive buildings from which they can never see the light of day. Evidence of decay lies in the inability of the empire to maintain order on the galactic periphery, as neo-barbarism threatens the peace and order that has lasted for millennia. The analogy is clearly (perhaps too clearly) based on the Roman Empire and its collapse in the face of the Germanic invasions.
One visionary, Hari Seldon, through the “science” of psychohistory, attempts to forestall the eventual collapse of the empire that will result in so such great destruction. He establishes a tiny settlement on the edge of the galaxy, which has the ostensible purpose of preserving the cultural heritage of the empire by compiling the Encyclopedia Galatica. His true intent, though, is to establish the nucleus of a new order that will survive the coming destruction. The adventures of the Foundation in that far future make for fascinating reading.
The virtues of the new order, the Foundation, are strikingly similar to virtues of post-World War II America—gumption, get-up-and-go, free enterprise, and the establishment of new markets. Because Asimov reveals a future that is strikingly analogous to corporate America, some readers are uncomfortable with what they see as a dated ideology.
But whatever the deficiencies in Asimov’s work that we see in retrospect, he is nonetheless important for establishing the major features of galactic SF. His Foundation Trilogy is the kind of SF that many contemporary SF writers grew up on. Their work now wouldn’t be the same without him, and Asimov is an indispensable influence in the development of SF during the so-called Golden Age.
A LOGICAL PROGRESSION
Planetary SF allowed several new places to set a story, but those new locations were used up pretty fast. SF writers needed new locations, and interstellar travel supplied them in virtually an infinite number. Writers—with Asimov leading the way—soon mapped and established the rules for using this new space.
Given the progression from lunar, to interplanetary, to interstellar SF, we might wonder about the development of inter-galactic SF. Stories here and there deal with travel between galaxies, but writers by and large have not developed any special or important themes that would require travel between galaxies.