Terrestrial homeworld

The Terrestrial homeworld is the original stage of human history and the planet from which successive civilizations rise, collapse, and finally depart. Its significance is not simply that it shelters humanity: the changing condition of the planet, the limits of its resources, and the remains of earlier societies repeatedly redirect human development. In the book’s long view, the world’s history is a slow succession of ages punctuated by rare disasters, even when the compressed narration makes those changes seem rapid.

Setting and historical scale

The Terrestrial homeworld anchors a chronology that spans aeons. The narrator cautions that the narrative’s crowded sequence of adventures and catastrophes is an effect of compression: human history is more like a sluggish river, with long intervals of sameness between uncommon episodes of upheaval. The planet’s remote past and future are similarly difficult for earlier minds to imagine. Its history occupies only a moment in the life of the stars, while each apparently distant era contains depths of time of its own.

That scale makes the world both a home and a historical record. Successive societies inherit terrain already altered by earlier inhabitants, and what later generations know about their predecessors depends on which traces survive and how they are interpreted. The same landscape can therefore appear empty of history to one people and crowded with evidence to another.

The First World State and the exhausted planet

After the founding of the First World State, humanity remained a single social unit for about four thousand years, apart from minor local conflicts. Material progress was rapid during the first millennium, then largely stalled as society devoted its energies to maintaining its established routine. After roughly another three thousand years of lavish expenditure, essential power sources failed. The society had neither the flexibility nor the mental agility to meet the crisis, and its social order collapsed.

Coal was the immediate resource at issue. The original fields had been exhausted centuries earlier, and for thousands of years the main supply had come from Antarctica. Its abundance encouraged the false belief that it could not run out. When reports emerged that even the deepest borings had found no further deposits, the population initially refused to believe them. A practical response would have been to cut the enormous resources devoted to ritual flying, but that institution was bound to religious faith and the status of the flying aristocracy. The crisis thus exposed a deeper failure: a society organized around its customary use of power could not readily change course when its material basis disappeared.

The collapse became a prolonged historical break. An epidemic of insanity and diminished intelligence, associated with the use of microbes, prevented people from arresting the initial decline. The survivors then faced further pressures, including the loss of prolonged youth through a gradual physiological change the narrator calls general senescence of the species. In a biologically unnatural environment, humanity had lived at excessive pressure without compensating for the strain. Only a tenth of the population survived the disaster. The following generations, largely descended from agricultural workers, struggled without machinery, fertilizers, or accessible mineral wealth; agriculture, local feuds, and small tyrannies replaced the coordination of the former world.

Even the material remains of the old society acquired new meanings. With iron inaccessible, people made crude tools from broken pebbles. They engraved them with the Swastika, once used as a sacred emblem by the First Men and originally associated with an aeroplane diving to destruction. Later generations recast it as the sign of a divine ancestor and a memorial of a lost golden age. The artifact survived, but its history did not survive intact: a symbol of revolt and collapse became a promise that divine intervention might restore the past.

Ruins, catastrophe, and recurring civilizations

The planet’s buried history later overturned the assumptions of Patagonia. Because the new homeland had no visible remains of the ancient order, its ruins elsewhere had been dismissed as natural formations. Archaeologists eventually found durable metal printing plates in the basement of a shattered pylon in China. The plates, which had served as printing blocks around a hundred thousand years earlier, carried writing that took centuries to decipher. As further deposits were uncovered, the Patagonians reconstructed the earlier civilization and learned that their own achievements occupied only a small place beside the ancient world’s former reach. The discovery turned physical ruins into an inheritance of thought, but it also confronted the new society with the scale of a rise and ruin it had not known had occurred.

The Terrestrial homeworld was not protected from later planetary catastrophe. Patagonia’s death agony ended in a disaster that transformed the planet: eruptions and electromagnetic collapse devastated broad regions, while hurricanes, volcanic activity, and rising surface temperatures made most of the world uninhabitable. Of the two hundred million people alive, only thirty-five survived, by chance, near the North Pole. The scale of this destruction stands in sharp contrast to the long periods of social stagnation that frame the book’s history.

Between such breaks, civilizations repeatedly attempted to remake life on the planet. In the history of the Third Men, biological experimentation and the remaking of humanity recur across many cultures, but these efforts repeatedly collapse into chaos. Industrial civilizations also appear in different forms, drawing power from wind and falling water, tides, or the planet’s internal heat. Their outcomes differ, yet even long-lived and comparatively harmonious orders prove vulnerable to resource use, war, disease, or the attempt to assign people specialized hereditary functions. The planet’s history is therefore cyclical in pattern but not mechanically identical: similar ambitions encounter different material conditions and fail by different routes.

Wars with Mars and departure from the world

The Terrestrial homeworld’s history also becomes entangled with life on Mars. During the Second Men’s period of preparation for artificial evolution, the Martians invaded for both material and religious reasons: they sought water and vegetable matter, and also sought to liberate the planet’s diamonds. The conditions that made the world habitable to humans were hostile to the invaders. Its dense, moist, oxygen-rich atmosphere impeded the Martian cloudlets, and rain damaged their vital processes. The first invasion ended, but the remains of the Martians brought a further danger: their dispersed subvital units became a virulent dust that infected human tissue.

Although researchers eventually checked the infection and cleansed the atmosphere and human bodies, the generations already affected did not recover. Their tissues had been too badly damaged, fertility declined, and the population became divided between a small number of healthy young people and many ageing invalids. The stricken generation chose to end its lives when it was judged to have outlived its competence, leaving a smaller, inexperienced population to rebuild the damaged civilization. The physical destruction and famine caused by the invasion mattered, but the lasting physiological effects reshaped the society more profoundly.

The later human-Martian war ended in mutual destruction. When a human bacteriologist announced that a transmissible virus could infect the enemy only at the cost of annihilating humanity as well, the weapon was put into action with public approval. The Martian colony disappeared, and the infection reached Mars; humanity made no effective effort to save itself. The result was not a victory that secured the world, but the extinction of both peoples and the disintegration of public life on the planet.

Humanity eventually left the Terrestrial homeworld for Venus. The Moon had grown so large that it periodically turned day into night and night into day; its tides and the resulting weather had damaged both the planet’s amenities and civilization. Because Venus could support no more than one hundred million people tolerably, preparations there included a deliberate reduction of the population to roughly one hundredth of its former size. The migration took centuries and carried not only the remaining people but representatives of other organisms and the most valued cultural treasures. The departure was reluctant: humanity evacuated a damaged home whose natural and social conditions had become increasingly difficult to endure.

The lost home in the Last Men’s history

By the time of the Last Men, the Terrestrial homeworld belongs to an immense human past rather than to lived experience. The narrator imagines a First Man entering their world and finding recognizable but profoundly altered beings, while failing to perceive much of the Last Men’s distinctive spiritual culture. That comparison places the lost planet within a wider argument about change: later humanity remains connected to its predecessors, but neither bodies nor social worlds stand still across the intervening ages.

The Terrestrial homeworld’s narrative importance lies in this combination of material history and imperfect memory. Coal deposits, printed metal plates, crude pebble tools, and the altered lunar sky each mark different relations between civilization and its environment. Ruins preserve evidence while legends distort it; planetary crises impose consequences that social institutions cannot easily master. The world that first sustained human civilization ultimately becomes an inheritance to be interpreted from elsewhere, its many recoveries and failures forming the deep background against which the Last Men understand humanity’s past.