The Large Spaceship Competition


We space opera fans like big things:  sweeping plots and intrigues, larger-than-life characters, huge explosions.  And big spaceships.  The bigger, the better.

You remember the opening of the original Star Wars.  At the top of the frame, the Imperial Star Destroyer looms into view.  And keeps coming, for what seems like forever.  With this visual cue, Lucas communicates immediately the sheer scale of his story.

In a long story, this can lead to a Lensman Arms Race in terms of spaceship size—each new construct eclipsing the last.  One might wonder:  How far can we go with this?  Who holds the record for Largest Spaceship of All?

Traditional spacecraft

Saturn V-Apollo on transporterOrdinary, garden-variety depictions of spaceships are long since out of the running—not just real vehicles like the Saturn V-Apollo, but fictional ones that are meant to be big.  Kate Wilhelm’s title “The Mile-Long Spaceship” (1957) doesn’t sound even slightly impressive any more.  According to Wikipedia, those Star Destroyers range up to 2,915 meters, almost two miles.  The famous size comparison chart by Dirk Loechel displays these, along with the Independence Day mothership, the Dune Spacing Guild Heighliner, the Borg cube, and many more—but Loechel set his cutoff for the image, arbitrarily, at 24,000 meters:  “I had to draw the line somewhere.”

That’s just getting started.

“That’s no moon”

The alien probe in Clarke’s Rendezvous with Rama, which I’ve mentioned a couple of times before, is 50 kilometers long and 16 wide (31 by 10 miles).  That’s bigger than a lot of Earthly cities.

Death StarStar Wars’ Death Star, famously misidentified as a moon, has been estimated at between 100 and 160 kilometers in diameter (62 to 100 miles), at least three times larger.  The second Death Star, from Return of the Jedi, spanned somewhere between 200 and 400 kilometers (up to 250 miles), according to the same Wikipedia article.

Skylark of Valeron coverFor a long time I idolized E.E. Smith’s Skylark of Valeron as the epitome of spaceship scale.  The ship (not the novel of the same name), “almost of planetary dimensions,” is a sphere one thousand kilometers in diameter—about 621 miles (ch. 20).  That’s over twice the size of the large economy-size Death Star.  (A blogger going under the title Omnivorenz has done a detailed analysis of the various Skylark series spaceships.)

However, we’re still in the moon category, not yet up to planet-sized.  (Of course, if astronomers keep changing the rules on what counts as a planet, the two size ranges can overlap.)

Planets in motion

At this stage, we need to think about what counts as a “spaceship.”  Surely one requirement is that it be able to move in a directed fashion—otherwise the International Space Station would count.  But does it have to be a construct, a made thing?  Or can you take an existing mass and equip it with motive power?

Quite a few science fiction writers have depicted mobile planets (not simply in the sense of moving in an orbit, but of guided, directed motion).  In Blish’s Cities in Flight series, the characters twice use spindizzy drives to send whole worlds careening through the heavens.  E.E. Smith’s Lensmen, after a point, deploy “dirigible” planets almost routinely—not to mention antimatter objects (“negaspheres”) of comparable mass.  In The Wanderer, Fritz Leiber has not one, but two, traveling planets approach the Earth.  (The original source of the word “planet” is a Greek word meaning “wanderer.”)

There’s a series of stories by Robert Reed about something called “the Greatship,” but I haven’t managed to read them yet.  The blurbs describe the Greatship as “larger than worlds” and “apparently built from a re-engineered gas giant” – which would put us into a distinctly different size class from even an Earth-type planet.

And beyond

Here’s a question:  Does a “spaceship” have to be a single contiguous object?  Or can it be an array of objects that travel together, but are not physically connected?

In Larry Niven’s Known Space universe, the species known as Puppeteers flees a coming galactic disaster, not by leaving their homeworld, but by taking their planet with them—along with four others, arranged in a “Klemperer rosette” around their common center of gravity.  That’s traveling in style!  This “Fleet of Worlds” moves slower than light, but not much—and it’s five times larger, altogether, than a Blish or Smith flying planet.

The Cometeers coverBut Niven was writing hard science fiction, with some attempt at scientific plausibility.  The great space operas of earlier eras weren’t constrained by such trivial considerations.  For a long time, my list of giant spacecraft was topped by the so-called “comet” piloted by the adversaries in Jack Williamson’s 1936 classic The Cometeers.  It’s not a comet at all, but a green force-field shell enclosing an entire system of worlds:  the heroes count 143 planets, plus an artificial sun (ch. 13).  The eponymous alien Cometeers sail this congeries of worlds about the universe like space pirates on a grand scale.  It’s the biggest guided space-traveling object I’m run across that’s described with any precision.

The real prize, however, belongs to Arthur C. Clarke.  In the unthinkably far future of The City and the Stars (1956), a reconstruction of history shows the leading intelligences of a galactic civilization leaving the Milky Way on a voyage of exploration in what is apparently an entire star cluster, set into motion by energies on a galactic scale:

They had assembled a fleet before which imagination quailed.  Its flagships were suns, its smallest vessels, planets.  An entire globular cluster, with all its solar systems and all their teeming worlds, was about to be launched across infinity.

The long line of fire smashed through the heart of the Universe [i.e., the Galaxy], leaping from star to star.  In a moment of time a thousand suns had died, feeding their energies to the monstrous shape that had torn along the axis of the Galaxy, and was now receding into the abyss. . . .  (ch. 24)

That’s about as far as my imagination will go, to be sure.

The pursuit of wonder

TV Tropes collects a number of these references, and more, under the heading Planet Spaceship.

As we contemplate these logarithmic jumps in scale, we may note that after a point, the whole exercise can become meaningless.  If your “ship” includes whole planets and solar systems, why go anywhere?  It’s rather mysterious why Williamson’s Cometeers would need to roam the universe preying on other star systems (other than to provide a challenge for our dauntless heroes).  What are they getting that they haven’t already got ‘on board’?

The one likely answer may be, to see what’s out there (assuming you need this large a vessel to take you).  This is the primary reason Clarke’s far-future intelligences set out on their journey:

All we know is that the Empire made contact with—something—very strange and very great, far away around the curve of the Cosmos, at the other extremity of space itself.  What it was we can only guess, but its call must have been of immense urgency, and immense promise.  (ch. 24)

In a way, the exploration motive—“new life and new civilizations”—brings us back to where we started this exercise in scope.  Simply contemplating larger and larger objects brings us some degree of awe—a touch of that “sense of wonder” for which science fiction and fantasy are famous.  But a much greater wonder springs from the idea of meeting wholly new experiences—“very strange and very great.”

The grandest justification for leaving our world may be sheer discovery—even if we end up, like the Puppeteers, taking our world with us when we go.


One of the specialties of science fiction—and to some extent fantasy—is to evoke a sense of strangeness.  In dealing with the alien, the cosmic, that which is far away in space or time, SF can make us feel we are encountering something that passes the limits of our knowledge or understanding.

This isn’t as easy as it looks.

The Used and the Unusual

Since at least the original Star Wars (1977), it’s been good practice to portray a “Used Future.”  Star Wars gave us a world full of beaten-up, grimy equipment that looked as if it had been duct-taped together.  This is generally a good technique.  It adds realism.  We feel at home in a world where everything is not perfectly cleaned and aligned; it’s like where we actually live.  There’s a sense of familiarity.

One opposite to the “used future,” of course, is the kind of earlier SF movie that was full of shiny, spotless spaceships and immaculate gizmos.  But the sense of familiarity also has its own opposite:  the thrill of unfamiliarity.

One way the challenge arises is with extraterrestrials.  Suppose a story has us meeting intelligent aliens.  If they seem just like us—“rubber-forehead aliens”—they won’t be convincing.  We expect something from another world to be different.  The writer or director has to show creatures, technologies, behaviors that are unlike anything we’ve seen on Earth.

Escher: Wallpaper CaveYet these things must also be believable.  Something that simply looks random or arbitrary, like an abstract swirl of colors, won’t convince us we’re seeing a real thing at all.  How do we thread the needle between the too-familiar and the unintelligible?

Just Alien Enough

Natural laws do enforce certain constraints on physical objects.  But other characteristics are a matter of custom, design choices, or aesthetics.  To show something convincingly alien, we need to know the difference.

Alien ship from movie ArrivalSometimes a single feature can be odd enough to alert us that we’re “not in Kansas any more.”  The alien ship that appears in the movie Arrival looks strange at once, because it’s smaller at the bottom than at the top.  It looks as if it’s upside-down or sideways. Not the way we’d build, yes.  But is it physically impossible?  Nope.  The ship isn’t on the ground, balanced implausibly on a narrow end.  It’s floating in the air.  This not only frees the ship from the usual need for wheels or other supports; it also introduces a second, subtler strangeness.  When we humans land somewhere, we expect to land, to set ourselves down securely on a surface.  These folks seem quite comfortable floating just above the ground.

A classic example is Arthur C. Clarke’s Rendezvous with Rama.  A massive spacecraft—a spinning O’Neill cylinder—enters the solar system, apparently inert.  A human crew matches course to explore it before its hyperbolic orbit takes it out into interstellar space again.  The ship begins to “come alive” around them—but there’s no sign of intelligent life aboard.  The explorers find one strange and amazing feature after another.  The purpose of some becomes clear:  the long, shallow rectangular valleys turn out to be immense lights that illuminate the interior.  But they never find out the reasons for many other objects.  In the end they have to cut loose from the vessel, letting it go on its mysterious way.

Rendezvous with Rama interior illustrationClarke’s mastery of clear detail—how the airlock doors open, for instance—gives us the necessary sense of realism.  But leaving many things mysterious evokes the sense of mystery and wonder that is among the most distinctive experiences in science fiction.  The unfamiliar is clearly and concretely depicted, but the purpose remains obscure.

(Parenthetically, I advise paying no attention at all to the dreadful sequels Gentry Lee wrote to Rama under Clarke’s direction.  They make the classic mistake of erasing the mystery without replacing it with anything at all interesting.  As with certain other sequels, the only thing for a conscientious reader to do is declare them non-canonical and pretend they never happened.)

For another Clarke treatment, remember 2001:  A Space Odyssey.  The mundane and even humdrum character of the long space voyage makes the psychedelic sequence at the end feel even weirder than it is in itself.

Sufficiently Advanced Technology

Extraterrestrials need not be involved.  Distance in time or space, and the concurrent advances in technology, can also provide a good foundation for the sense of strangeness.  (It was, after all, Clarke’s Third Law that “any sufficiently advanced technology is indistinguishable from magic.”)

Among the numerous virtues of David Brin’s Hugo-winning novel Startide Rising is that sense of entering a new and unaccountable world.  His Earthly spaceship crew of “uplifted” dolphins, with their small group of human companions, use advanced techniques that are still recognizable to us.  But they’re dealing with galactic cultures that draw on hundreds of millions of years of accumulated science.  The results can be mind-boggling.  One species, for example, travels by using a captive creature that creates portals “by the adamant power of its ego—by its refusal to concede anything at all to Reality.”  This isn’t your grandmother’s hyperdrive.

Toy stack of ringsThe body of another species, the Jophur, consists of a stack of distinct rings, like a child’s toy.  The Brothers of the Ebony Shadows employ a probability weapon that sends out “waves of uncertainty.”  The fact that these species are nonhuman is incidental to the fact that their immense background of far-advanced science lets them use techniques that seem to surpass our understanding.

For a purely human example, let’s look at Arthur C. Clarke’s The City and the Stars.  (Clarke really had the knack for this sort of thing.)  The main character, who bears the pedestrian name of Alvin, lives in Diaspar, the last city on Earth, billions of years in our future.  The city’s structure does not erode or decay; it’s maintained by “eternity circuits” according to the model held in its master computers.  The people do not die in a conventional sense.  After living for a thousand years, each individual walks back into the Hall of Creation and is dissolved—but is also retained in the memory circuits, to be rematerialized eons later.  Thus the population of the city is always changing, but the individuals continue.  And that’s only the beginning . . .

The City and the Stars, illustration

Exotic Ways of Life

Technology is one thing; behavior is another.  The City and the Stars does a terrific job of imagining how the society of Diaspar is shaped by the extraordinary conditions under which its people live.

When I read Yoon Ha Lee’s Ninefox Gambit, it was billed as ‘military science fiction’—but it’s nothing like the general run of military SF.  The six factions in the story make use of technologies that create real-world effects based on “formations” of people and their consensus beliefs.  Much of the plot revolves around a revolt based on “calendrical heresy”—which is just what it sounds like:  deviation from the standard calendars.  In Lee’s world, calendrical uniformity isn’t just a matter of convenience, but of crucial importance.  The resulting society is correspondingly peculiar.  Reading the story makes you feel as if you’re constantly being knocked sideways.

Greg Bear’s City at the End of Time combines present-day characters with those living in a city one hundred trillion years in the future.  The far-future people consist of “noötic” or virtual mass, are defended by “reality generators,” and are trying to fight a cosmic entity that’s trying to destroy the universe by disintegrating its history, acting backward through time.  The present-day people in mundane Seattle keep us grounded, but trying to understand the end-of-time characters and what they are doing requires a constant stretching of the imagination.

Strangeness and Wonder

The sense of strangeness or mystery is one form of the “sense of wonder” often used to characterize science fiction.  It takes us out of the mundane, makes us strain to conceive the inconceivable.  We’re often told that world travel expands our horizons by exposing us to different places and cultures.  Science fiction goes further:  it exposes us to ideas and places and people that don’t exist in the world at all.  At its limits, SF seeks to show us more than we can even comprehend.  The lack of reality is compensated by the greater impetus to go beyond our mental limitations.

To achieve that experience, we seem to need the right combination of the familiar and the exotic.  The weird stuff at the end of 2001 isn’t entirely successful, in my view:  it’s too strange.  Not only do we not understand what’s happening; we don’t quite feel there is anything to understand.  You have to read the book to figure out what’s going on.

But when we have enough groundedness to effect the “willing suspension of disbelief,” yet enough mystery to defeat (in part) our attempt to understand, the combination is uniquely fascinating.  As I noted at the beginning, this isn’t an easy balance to strike.  But the payoff makes it worth attempting.