Theory becomes the apparatus. A metonymic relation. A trope of nearness. Miniscule gravitational disturbances become known as a kilometres-long, L-shaped facility. Particle physics: a circular tunnel beneath the Geneva hinterland. 

Somewhere in the early 1970s, our grandfather, a carpenter by trade, buys a telescope^1,2, installs it on the lawn, and points it over the hedge. ‘I remember seeing the craters on the moon. The rings of Saturn,’ he told us. 

In the shabby plywood box I made to transport the telescope lies a metal ring I ground flat to be able to attach my camera and focus it on infinity.

The hedge, now three metres in height, shields the lower part of the sky from sight and needs pruning.

A scene in German author and director Alexander Kluge’s Die Patriotin: a half-dome opens; the protagonist, Gabi Teichert, stares into the telescope. A montage follows: the waxing crescent moon coming into focus; a night vision of a cityscape with industrial elements; archival footage of a cityscape with skyscrapers during daytime; a giant fire; a woman giving birth aided by a midwife; raindrops falling into a puddle of water; a time-lapse video of a city at sundown; a ship floating by with, in the background, on the shore, windmills; images of tanks rolling by; close-ups of a purple-lit face of someone looking into the camera; archival footage of an air raid.^{1, 2}

In a conversation with Ben Lerner, Kluge sees himself as someone ‘creating constellations’: ‘We deal with moving bodies. “Moving reality.” […] And this is something that you cannot present in a linear way, but in the form of constellations. “Constellation” refers to cosmic matter and gravitation. There are suns, moons, planets. There are also the dust particles, tiny particles that orbit around the sun for centuries according to physical laws. And there’s no hinge, no screw that connects them. Invisible connections.’³

It is said that ‘if a space traveller were unfortunate enough to enter the atmosphere of one of the giant planets [such as Neptune], he or she would not find a single solid surface. Instead, as he or she descended into the planet, our traveller would find that the temperature, pressure, and density would all continue to increase smoothly, with no sharp transitions. Assuming that he or she was adequately protected from the temperature, pressure, and radiation, our traveller would eventually “float” at that level in the atmosphere where the surrounding density and his or her own density were equal.’¹ 

It is said that it storms on Neptune.
Violently.
1200 mph. 

They observed a great dark spot and called it: The Great Dark Spot.

It rains diamonds on Neptune.

A seminar on spectroscopy: how, by splitting light into different, separate rays, it becomes possible to deduct the chemical composition of stars and planets far beyond our reach, as those elements have an effect on the light that reaches the spectroscope. Beautiful graphs presenting colour in schemes of black and white. From the moment the course gets into the physics of light, my mind wanders off. What approaches the observer turns blue, what elongates itself becomes red. The teacher’s leather shoes squeak as he goes back and forth between his self-made spectroscope and the desk. Redshift. Blueshift.

We meet him a couple of weeks later on the rooftop of a university building. He opens one of the half-domes. The sound of the mechanics is as obtuse as the shape it alters. A command on the computer based on coordinates: above our heads, the telescope slews slowly, only to halt at an apparently indistinct black region. From within the dome, we send ourselves an email with the photographs that we took of Neptune. 

University classes will start in a couple of weeks. The city air is crisp. The roundabout below is strangely calm. On the horizon, the canopy of a southern forest delineates the sodium-lit sky. 

As an architectural structure, the pier is fundamental in observational astronomy: it can be found in the backyards of amateur observatories, as well as in professional ones. This column is a quintessential part of the physical interventions that are necessary to distinguish noise from valuable data. The pier disjoints the telescope from the observer, from the observatory and from the surroundings. Tremors of passing cars, the astronomer’s footsteps and coughs, the neighbour’s soundsystem: they could result in an agitated telescope. A falling mug would cause the instrument to shift lightyears away from its target.

While calibrating their telescopes, or dealing with unforeseen, cloudy weather, amateur astronomers tend to trade the far for the not-so-far, and point their telescopes at their immediate surroundings.

As the light of celestial objects travels through the Earth’s atmosphere, the various wavelengths that make up this light are refracted differently. This effect is called ‘dispersion’ and results in colour fringing on the edges of planetary discs: images with a sliver of blue at the top and a red one at the bottom appear.

When celestial objects are positioned close to the horizon (like Neptune when observed from Luxembourg) the images are severely affected: the path of the light through the atmosphere is longer, leading to greater dispersion. 

For the same reason sunsets are red, Neptune turns from a monochromatic blue disc into a misaligned, multicoloured oval. 

The planet Uranus should have followed a course as predicted by Newton’s laws. It didn’t. There were ‘residuals’, the 19th-century observers said: irregular data, which had to be interpreted as Uranus deviating from the projected trajectory. They could think of three possibilities. A) The planet Uranus was too far away from the Sun, which might render the Law of Gravitation invalid. B) The observations were incorrect. C) There was another planet, still further and yet unknown, with its own gravitational field and pull, causing Uranus to deviate from its course.

Following hypothesis C, astronomers predicted the position of a planet with a gravitational field, influencing Uranus, by means of mathematical calculations. Telescopes were directed to that calculated spot. There was a luminous point, with a touch of bright azure blue.

September 2020, three days before Neptune is in opposition, I meet Frédéric on top of a hill in Luxembourg. 

Earlier that day he had sent me the coordinates of an airfield for remote controlled aeroplanes. He told me to meet him there at 20h. The airfield is situated on the top of a hill, granting a clear view of the horizon. Removed from highways and city centres, only the southern horizon lights up, where the Grand Duchy’s capital is located, some 15 kilometres farther. The weather is promising: ‘We might get a chance to see and photograph Neptune!’ he wrote. 

I get there early. Frédéric is already setting up his tripod. Two elderly men are training for the perfect landing.

When the Sun, the Earth and one of the outer planets of the Solar System perfectly align, with the Earth positioned in the middle, the outer planet is said to be ‘in opposition’. It’s a moment of planetary approach and of optimal viewing conditions: the Earth and the outer planet are at their closest and brightest. 

Here, on his kitchen table, Marcel Poulet, an expert on the stoneware tradition in the center of France, is explaining his archeological work on ‘whale ovens’. 

I started collecting images and plans of ovens, for the beauty of those abstract technical lines and for what we can learn from them. In gathering the material that makes up this Atlas, and in sharing interests and knowledge, I learned that many people know about ovens, either in their homes, gardens, ateliers, factories, streets… Everyone transforms things through heat. Even bodies need warmth and produce some themselves.

In Veurne, at the bakery museum, old speculaas moulds are presented in an almost religious fashion. Looking at these wooden blocks, they appear to be the negatives to Romanesque sculptures.

How does it feel to be conserved and showcased when your nature is to be a tool? What would it mean to re-use them, to fill those empty moulds, to shape something new without altering the matrix, to project what it would be like, to try out recipes and different baking, to learn from it and enjoy the results together? What scenes are even depicted? We lost part of their meaning, we could dig further, browse the books, ask our grandparents and collectively invent whatever narrative they might hold.

This stack of seaweed was offered by Henning, a farmer of the wonderful island of Laeso. This matriarchal pirate island, north of Denmark, is known for its tradition of building roofs from the seaweed growing in the surrounding salty water. Back in time, women would harvest and slowly weave the material around wooden beams from shipwrecks. This time-consuming process and technique of building shelters from what comes from the sea engaged the population in working together, building a ritual around each construction. Then those wild, yet full-of-care roofs, conserved in salt, would last for hundreds of years.

When I arrived on his land, Henning told me about how he restores those old beauties, weaving fresh seaweed around old beams and pressing the collected old material into insulation panels for new buildings. We talked about the clay of his land and how seaweed can become a material for ceramics in the process of making glazes. 

Jolimont, December 2021. The place is in ruins. We occupy the domain with students of La Cambre in an attempt to practice ceramics with what is there. In the former ceramic atelier, we gather everything that was purposelessly there: a weird collection of things from the past, waiting to be organized, displayed, used or thrown away. 

The firing tool was made to take out the accumulating ashes from the firebox, to keep the air flowing in the oven, raising the temperature, reaching our ceramic-making goal of 1150°C. Not very efficient, time or heat resistant, this savage, yet poetic composition barely survived the firing. 

The wooden handle was borrowed from a broom.
The scraper is a fragment of a chandelier previously hanging in one of the salons.
The connecting element is an old electrical resistor we found in one of the dismantled ovens.

The Cryptolaemus montrouzieri is commonly known as the mealybug destroyer. This species of ladybird gets its nickname from its capacity to battle mealybugs in plantations and greenhouses.

The website waarnemingen.be that gathers observations of plants and animals in Belgium lists multiple observations in the wild of the Cryptolaemus montrouzieri. The website explains that ‘in (northern) Europe, the species is widely traded and used in greenhouses and will regularly escape from them. But this ladybird cannot survive our winters (yet?). Sightings within the Benelux must therefore be entered into the register as “escape”. However, the species is already established in the Mediterranean area.’ (our translation)

The larvae have a waxy covering that makes them look like the mealybugs they prey upon, allowing them to avoid being correctly identified by the ones they are about to devour. 

In an attempt to get rid of the mealybugs on my plants, I ordered 25 adult ladybirds. They were dead on arrival.