Harmonia Caelestis

Celestial Harmony

Maps of the heavens in the manner of the 1600s, drawn by code, with today’s real sky inside them.

Harmonia Caelestis by Awareness Paradox

A plate of Harmonia Caelestis: the Copernican system. Blue orbits round a coral Sun inside a ring of the zodiac, under a lettered title, with a table of the planets, a round medallion and four small studies below.

NigredoThe blackening. The alchemists’ Great Work begins in the dark, and so does this roll, under the night sky.

Mint a plate

A still of this plate for 5 November 2026. Open the plate live.

The mint is not open.

People have always looked up

Albedo, the whitening. The second stage of the Work: the page washed clean, ready for words.For as long as there have been people, they have looked at the night sky and asked what it means. Why does the Moon grow and shrink? Why do a few bright points wander while the others stay put? Does any of it have to do with us?

More than 2,500 years ago, scribes in Babylon watched the sky night after night and wrote down what they saw. They believed the heavens carried messages about life on Earth. People in many other places and times have asked the same questions and drawn their own answers.

As above, so below

Hermes Trismegistus: Hermes the thrice-great. The name means more here than the man, who is a legend.One old answer fits in four words. As above, so below is the short form of a line in the Emerald Tablet, a brief and mysterious text passed down in Arabic and Latin and credited to a legendary sage called Hermes Trismegistus. The tradition that grew up around his name is called Hermetic.

The idea is simple to say. What happens in the heavens and what happens down here are reflections of one another. Those who held it saw the great world and the small world as mirrors of each other, in tune with one another. That is where this collection gets its name: Harmonia Caelestis means Celestial Harmony.

Close-up of a round medallion. Around its rim, in engraved Latin capitals: QVOD EST INFERIVS EST SICVT QVOD EST SVPERIVS. At its foot: MICROCOSMVS. Inside, the plate's own world drawn small: blue orbits round a gold Sun.
An ordinary day. The plate’s own world, drawn small. 5 November 2026.
The same medallion with the same inscription. Inside now, a total eclipse of the Sun: a black disc ringed by a white corona with long rays, on deep blue.
The day of an eclipse. The same medallion, on the total eclipse of the Sun of 2 August 2027.

These are close-ups of the medallion at the foot of every plate. Around its rim runs the Emerald Tablet’s own line, cut in Latin: QVOD EST INFERIVS EST SICVT QVOD EST SVPERIVS. In English: what is below is like what is above. Underneath is one word, MICROCOSMVS: the small world.

On an ordinary day the medallion holds the plate’s own world, drawn small. On the day of an eclipse, that eclipse appears inside it, drawn as it happens. An event in the sky above appears in the small world below.

The plate does what the line says.

Astrology, and the maps

Astrology is one of humanity’s oldest ways of asking the same question. It looks at where the Sun, the Moon and the planets stand against the stars, and asks what that might mean for life down here.

To read the sky, you first have to know where everything is. So people measured it, with great care, and drew it. Ptolemy and Kepler, whose pictures of the universe appear on these plates, both also wrote about astrology. For a very long time, measuring the sky and asking what it meant went together.

In 1660 a mapmaker named Andreas Cellarius published the Harmonia Macrocosmica, the “Harmony of the Great World”: an atlas of the heavens, printed from engraved copper plates, with many copies coloured by hand. It set rival pictures of the universe side by side, with the Earth at the centre, with the Sun at the centre, and with a design in between. These plates come from that tradition, and their lettering is drawn from his.

Why it still matters

We know far more about the sky than those mapmakers did. We have walked on the Moon and sent machines past the planets. And people still stop in the street to look at a full Moon. They still cross the world to stand in the shadow of an eclipse. Knowing what the planets are made of has not ended the question of what they mean to us.

The sky is also the one thing every person who has ever lived has shared. The Moon you can see this month is the Moon the scribes of Babylon wrote down. Most of us now live under city lights and rarely look up. When we do, we remember that we live somewhere: on a world, among other worlds.

I’m making this project to connect people to the cosmos.

I’m not asking anyone to believe that the stars decide anything. I’m asking you to look up, and to feel what people have felt when they looked up, from the beginning. Each plate is a map of the heavens in the old manner, with today’s real sky inside it. The planets on it stand where they truly are right now, and the plate moves with them, every day, on your wall or on your phone.

A plate can also hold one date that matters to its owner, set once and for good. A birth, say. The plate then keeps the sky above that person’s first day, beside the live sky of today. It is the same idea, made personal: the sky above, kept in the small world below.

Awareness Paradox

What a plate does

CitrinitasThe yellowing. The third stage of the Work, when the gold comes.

Every plate is made by code from a seed, a long number fixed for that plate. The seed chooses its world, its colours and its details. The sky is the real sky, worked out in the plate’s own code from the planets’ orbits, with no outside data. Every picture below is a real plate, and each one opens.

Ten pictures of the universe

Each plate draws one of ten great pictures people have made of how the heavens are arranged. Some are astronomy, some are philosophy or faith. All of them carry the same live sky.

Four colourists, and a night sheet

In the workshops of the 1600s, prints were often coloured by hand, so copies of one print could differ. Here the code works as four colourists, each with a palette of its own. These are one world, the alchemists’, in each of the four hands. About one plate in eight is a Nocturne, in gold and white on indigo paper.

One sky, many heavens

These four plates show the same moment: noon at Greenwich on 5 November 2026. On all of them Mars stands in the sign of Leo, at 20 degrees. Ptolemy’s plate carries Mars on a sphere around the Earth. Copernicus’s carries it around the Sun. Tycho’s has the Sun carrying it around the Earth. The alchemists’ plate reads Mars as iron, one of seven metals. These pictures cannot all be right. They all show the same sky.

The days the sky does more

Every plate moves a little every day. On some days the sky does more, and so does the plate. This is one plate on five real days.

New and full Moons come about once a month each. Eclipses come about four times a year. Rarer still are the great meetings of Jupiter and Saturn and the gatherings of the planets, the next of them in 2040, when the plate draws the event in the medallion and a diagram of it in the heaven.

A moment of your own

A plate can hold one moment: a date its owner sets once and for good, such as a birth or a gift. The plate then has two views, the live sky and the moment, and whoever displays it can switch between them. Only the sky is kept. The plate keeps no name and no place.

Famous moments in history

About three plates in a hundred come with a moment already in them: a famous sky from history. They wear a gilt frame and carry the moment’s name in their title. They have a live view too.

Mint a plate

RubedoThe reddening. The last stage of the Work, when it is finished and sealed.

A random number, drawn in your browser, chooses the plate’s world, its colours and its rising sign. The sky is today’s.

The mint is not open.

Press the seal to see how a plate is made