Moon / plasma / Gruithuisen City

A speculative visual study of lunar proximity, plasma structures, signal instability, and the historical imagination of architecture on the Moon.

Lost Moon Transmission

Most people imagine the Moon as silent, static, and geologically ancient. But from a space-physics perspective, the region around the Moon is anything but empty.

One of the most fascinating concepts in plasma science is the plasmoid — a magnetic-plasma structure formed during magnetic reconnection, when magnetic field lines break, reconnect, and rapidly release energy into heat, particle acceleration, and plasma flows.

What makes this especially interesting is that the Moon is not isolated from these processes. As the Moon moves through space, it can pass through regions connected to Earth’s distant magnetotail, where large-scale plasma dynamics unfold.

This means that when scientists talk about plasmoids “near the Moon,” they are usually not describing mysterious visible objects sitting on the lunar surface. They are describing something far more interesting: a dynamic plasma environment, a shifting magnetic structure, a region where energy, particles, and fields interact on enormous scales.

So the idea is not that “there are confirmed plasmoids on the Moon” in a literal visual sense. The idea is that the space around the Moon can become part of a much larger electromagnetic system, where reconnection events and plasma structures may appear, evolve, and move through near-lunar space.

And that raises a fascinating visual question: if plasmoids existed as visible forms near the Moon, what might they look like?

Probably not like solid objects. Not like spacecraft. Not even like simple glowing spheres. They would more likely appear as semi-transparent, unstable, luminous plasma formations — elongated or curved, glowing along the edges, shaped by magnetic tension rather than gravity.

Something between a plasma bubble, a magnetic knot, and a living ribbon of light suspended in darkness. In artistic terms, they might look like drifting structures of energy: fluid, electric, atmospheric, and constantly changing shape.

The Moon may look quiet in photographs, but the physics around it tells a far more dynamic story. What seems like empty space may actually be a laboratory of plasma, motion, and magnetic complexity. And maybe that is the most beautiful part of space science: the closer we look, the less empty space feels.

If plasmoids existed as visible forms near the Moon, they might have looked something like this.

Approaching the Moon in the 1970s

The second part of the work can be read as an imagined imitation of onboard camera footage from a 1970s spacecraft during its approach to the Moon.

The central movement is the flight itself: a gradual transition from distant observation to close lunar proximity, accompanied by growing instability in the telemetry, as though a strong magnetic-field-like disturbance is beginning to affect the onboard systems.

The signal no longer feels like a passive recording layer, but becomes part of the event — a trace of interference, stress, and approach.

Against this setting, the luminous objects are conceived as possessing their own behavioural logic: they appear in dispersed formations, pulse intermittently, maintain relative spacing, and seem to react to the spacecraft’s presence before drawing into tighter clusters and converging toward it.

The work remains a speculative, authorial imagining of how such an event might appear.

Gruithuisen City conceptual lunar reconstruction
Gruithuisen City

In 1822, German physician and astronomer Franz von Gruithuisen observed the Moon through a small 6 cm telescope and sketched an unusual formation near Schröter crater. It resembled a network of walls, roads, and open spaces so geometric in appearance that he called it “Wallwerk” — essentially, a fortified city.

This feature later became known as Gruithuisen City.

The object is located on the near side of the Moon, facing Earth, in the region of Sinus Aestuum — the Bay of Seething — between the craters Eratosthenes and Schröter. Its approximate coordinates are 6° N, 8° W. According to historical descriptions, the structure extends across a large area of uneven terrain and stands out against a dark background caused by volcanic pyroclastic deposits.

In the 19th century, the discovery caused a sensation. Some observers interpreted it as possible evidence of intelligent life on the Moon — fortifications, roads, or even giant signs. Others argued that it was simply an optical illusion created by a natural combination of lunar ridges, craters, and shadows.

Over time, most astronomers leaned toward a natural explanation, while still admitting that under certain lighting conditions the formation looks strikingly “architectural.”

And that leads to the most intriguing question: what if we imagine how this “lunar city” would look not from Earth through a 19th-century telescope, but from just 100 km above the Moon’s surface?

Not as a fantasy metropolis, but as a mysterious arrangement of bright ridges, dark plains, arcs, craters, and elevated formations — a structure that, for a moment, makes us see traces of order in the chaotic landscape of the Moon.

Image A: Gruithuisen’s 1822 sketch of the so-called lunar “city.”

Image B: Photograph of Gruithuisen City; the source text does not specify the date when this lunar photograph was taken.

Image C: A conceptual reconstruction of how this presumed “city” might look from an altitude of 100 km above the lunar surface, based on Gruithuisen’s 19th-century drawings and later photographs.

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