Martians

The Martians are a non-terrestrial species whose living bodies are clouds of minute, specialized units rather than continuous structures of matter. Their changing organization allows them to act as individual cloudlets, coordinated collectives, or—in major crises—as a unified mind encompassing much of their species. This biology underlies their capacity for extraordinary movement and physical force, their scientific achievements, and their repeated invasions of Earth. The story’s central estrangement is mutual: humans initially mistake their unfamiliar organization for something barely alive, while the Martians regard human beings as secondary to the terrestrial systems they encounter.

A Life Without Continuous Bodies

Martian life developed from subvital units that can coordinate without remaining in material contact. These units respond directly to etherial vibrations and can initiate vibrations of their own. In place of a nervous system connecting bodily parts to a central brain, a typical Martian organism is a cloudlet whose members maintain unity through a group-mind. Communication reaches farther than the physical forces that hold or move the cloud together: the units can remain in contact with their wandering fellows even when they cannot exert magnetic attraction or repulsion across the same distance.

The cloud is not simply a loose gathering. Specialized units generate magnetic fields that attract or repel neighboring units, lending the otherwise disconnected organism cohesion, a shifting outline, and a resistant surface. In dense formation, a cloud-jelly can press upon surrounding objects with immense force and can also manipulate them delicately. Magnetic forces move the cloud over the ground and carry both inert material and living units from one part of its body to another. The same biology therefore supports mobility, strength, and fine control without requiring the continuous flesh familiar from terrestrial animals.

The Martians can adopt three broad formations. In open order, relatively tenuous cloudlets move independently while remaining in telepathic communication, and may act with close unity as a group. They can also form a denser corporate cloud, or concentrate further into a formidable cloud-jelly. Each cloudlet is itself a layered organization of specialized groups and smaller groups, assembled from specialized varieties of subvital units. What appears at one scale to be an individual can thus contain many organized subgroups; what appears at another can become part of a much larger collective.

Individual and Collective Minds

For most purposes, a Martian is an individual cloudlet. Yet the species as a whole has the capacity, on occasions of collective importance, to become a single biological and psychological individual. When a crisis concerns the race, each cloudlet may awaken to a consciousness informed by the experience of the whole. This does not erase the distinction between individuals and the collective in ordinary life: the planetary-scale unity is exceptional, while cloudlets remain the usual form of Martian individuality.

The Martians’ organization is compared to a disciplined army because its members can move freely yet arrange themselves into specialized orders without losing the unity of the whole. Unlike an ordinary army, however, the species can at times become conscious as one. This arrangement is not simply imposed from a central bodily command system. Its units are capable of individual experience and can submit themselves to discipline while remaining parts of a larger living organization. The result unsettles the assumption that a single mind must belong to a single, materially continuous body.

The species’ form of life developed gradually. Early units became independent after reproduction, but the capacity to emit radiation later allowed separated individuals to maintain contact and coordinate. Organized groups then retained radiant relations with groups of their offspring, producing larger individuals with specialized members. As this organization grew more complex, the reach of its influence expanded. At the height of Martian evolution, the whole planet could sometimes constitute one biological and psychological individual, though the text distinguishes such moments from the more usual life of separate cloudlets.

Scientific Achievement and the Journey to Earth

The Martians are strongly curious and have developed advanced knowledge in physics, astronomy, chemistry, and the chemistry of life. Their departure from Mars follows from theoretical physics: they learn to use the pressure of sunlight on minute particles near the top of the atmosphere, much as a sailing vessel uses wind. By dispersing into ultra-microscopic units, they gain purchase on the gravitational fields of the Solar System and travel toward Earth as an armada of minute vessels. Once in the terrestrial sky, they re-form as cloudlets, move through the denser atmosphere, and descend from alpine heights.

This journey requires intricate calculations and chemical inventions that preserve life during transit and on an alien planet. The achievement demonstrates that the Martians are not instinctive forces of nature but a scientifically capable civilization able to apply knowledge to the physical world. Their intellectual development is nevertheless uneven. They are accomplished in natural knowledge but poorly developed in what the narrator calls spiritual knowledge: they have little understanding of their own mentality or of mind’s place in the cosmos, and show little philosophical interest in questions that earlier human species had repeatedly confronted.

Invasions and the Human Misreading

The first invasion leaves terrestrial observers bewildered by the Martian clouds. Some speculate jokingly that the strange substance is alive and conscious because it appears to act vindictively, but the possibility is not taken seriously. The practical observation that beam radiation can disperse it does not provide a theoretical account of what the clouds are or where they belong in the order of life. Human scientific curiosity remains frustrated by the gap between an observed effect and an intelligible explanation.

Several years later, the Martians return in much greater force and are nearly immune to the offensive radiation used against them before. Operating from Earth’s alpine regions, they dry up major rivers at their sources and spread across jungle and agricultural land, stripping away vegetation. They carry water and food materials back to Mars through the work of specialized subvital units, each transporting a small quantity. At the same time, the main body explores and loots the planet. For these tasks the Martians shift between an impalpable mist that absorbs water and leafage and gigantic cloud-jellies capable of devastating human settlements. Human weapons prove ineffective until a new means of resistance is found.

The conflict also reveals a profound failure of mutual recognition. When the Martians discover terrestrial wireless stations, they identify them as the physical basis of human intelligence, but interpret them as crude, immobile systems rather than as signs of a civilization. Their judgment repeats the humans’ earlier mistake in reverse: each species measures the other by its own assumptions about what life and intelligence should look like. Human attempts to make contact and negotiate later fail because the Martians treat human envoys as representatives of terrestrial intelligence’s subordinate organisms, not as minds entitled to speak for themselves.

Repeated Conflict and Retrospective Significance

The invasions recur at irregular intervals across fifty thousand years. Each time, the Martians arrive protected against the weapons humanity used in the previous encounter, and each time they remain too long, allowing humans to develop a means of overcoming their new defenses. The Martians obtain water during these campaigns and, despite losing much of their population, are ultimately invigorated by the resource. Earth’s recovery, by contrast, becomes slower and less complete after successive attacks. The recurring pattern is therefore not a single contest with a settled outcome, but an extended asymmetry: the Martians adapt and return, while human survival increasingly carries the cost of each defeat and recovery.

In the book’s later reflection on the suffering of intelligent beings, the Martians are remembered as a people whose existence was marked by an obsessive and miserable condition. That retrospective places them among the many species whose lives are caught between brief fulfilment and the destructive pressures of history. Their importance to the narrative lies not only in their power to invade, but in the challenge their biology poses to human categories. They are at once organisms, individuals, and—in exceptional circumstances—a species-wide mind; their conflict with humanity becomes a prolonged encounter between forms of life that can observe one another’s effects long before they can understand one another.