“It’s wonderful what a kid can do with an Erector Set”

Reading Across the Airless Wilds by Earl Swift for the Times, 7 August 2021

There’s something about the moon that encourages, not just romance, not just fancy, but also a certain silliness. It was there in spades at the conference organised by the American Rocket Society in Manhattan in 1961. Time Magazine delighted in this “astonishing exhibition of the phony and the competent, the trivial and the magnificent.” (“It’s wonderful what a kid can do with an Erector Set”, one visiting engineer remarked.)

But the designs on show thefre were hardly any more bizarre than those put forward by the great minds of the era. The German rocket pioneer Hermann Oberth wrote an entire book advocating a moon car that could, if necessary, pogo-stick about the satellite. When Howard Seifert, the American Rocket Society’s president, advocated abandoning the car and preserving the pogo stick — well, Siefert’s “platform” might not have made it to the top of NASA’s favoured designs for a moon vehicle, but it was taken seriously.

Earl Swift is not above a bit of fun and wonder, but the main job of Across the Airless Wilds (a forbiddingly po-faced title for such an enjoyable book) is to explain how the oddness of the place — barren, airless, and boasting just one-sixth Earth’s gravity — tended to favour some very odd design solutions. True, NASA’s lunar rover, which actually flew on the last three Apollo missions, looks relatively normal, like a car (or at any rate, a go-kart). But this was really to do with weight constraints, budgets and historical accidents; a future in which the moon is explored by pogo-stick is still not quite out of the running.

For all its many rabbit-holes, this is a clear and compelling story about three men: Sam Romano, boss of General Motors’s lunar program, his visionary off-road specialist Mieczyslaw Gregory Bekker (Greg to his American friends) and Greg’s invaluable engineer Ferenc (Frank) Pavlics. These three were toying with the possibility of moon vehicles a full two years before the US boasted any astronauts, and the problems they confronted were not trivial. Until Bekker came along, tyres, wheels and tracks for different surfaces were developed more or less through informed trial and error. It was Bekker who treated off-roading as an intellectual puzzle as rigorous as the effort to establish the relationship between a ship’s hull and water, or a plane’s wing and the air it rides.

Not that rigour could gain much toe-hold in the early days of lunar design, since no-one could be sure what the consistency of the moon’s surface actually was. It was probably no dustier than an Earthbound desert, but there was always the nagging possibility that a spacecraft and its crew, landing on a convenient lunar plain, might vanish into some ghastly talcum quicksand.

On 3 February 1966 the Soviet probe Luna 9 put paid to that idea, settling, firmly and without incident, onto the Ocean of Storms. Though their plans for a manned mission had been abandoned, the Soviets were no bit player. Four years later it was an eight-wheel Soviet robot, Lunokhod-17, that first drove across the moon’s surface. Seven feet long and four feet tall, it upstaged NASA’s rovers nicely, with its months and miles of journey time, 25 soil samples and literally thousands of photographs.

Meanwhile NASA was having to re-imagine its Lunar Roving Vehicle any number of times, as it sought to wring every possible ounce of value from a programme that was being slashed by Congress a good year before Neil Armstrong even set foot on the Moon.

Conceived when it was assumed Apollo would be the first chapter in a long campaign of exploration and settlement, the LRV was being shrunk and squeezed and simplified to fit through an ever-tightening window of opportunity. This is the historical meat of Swift’s book, and he handles the technical, institutional and commercial complexities of the effort with a dramatist’s eye.

Apollo was supposed to pave the way for two-rocket missions. When they vanished from the schedule, the rover’s future hung in doubt. Without a second Saturn to carry cargo, any rover bound for the moon would have to be carried on the same lunar module that carried the crew. No-one knew if this was even possible.

There was, however, one wedge-shaped cavity still free between the descent stage’s legs: an awkward triangle “about the size and shape of a pup tent standing on its end.” So it was that the LRV, tht once boasted six wheels and a pressurised cabin, ended up the machine a Brompton folding bike wants to be when it grows up.

Ironically, it was NASA’s dwindling prospects post-Apollo that convinced its managers to origami something into that tiny space, just a shade over seventeen months prior to launch. Why not wring as much value out of Apollo’s last missions as possible?

The result was a triumph, though it maybe didn’t look like one. Its seats were basically deckchairs. It had neither roof, nor body. There was no steering wheel, just a T-bar the astronaut lent on. It weighed no more than one fully kitted-out astronaut, and its electric motors ground out just one horsepower. On the flat, it reached barely ten miles an hour.

But it was superbly designed for the moon, where a turn at 6MPH had it fishtailing like a speedboat, even as it bore more than twice its weight around an area the size of Manhattan.

In a market already oversaturated with books celebrating the 50th anniversary of Apollo in 2019 (many of them very good indeed) Swift finds his niche. He’s not narrow: there’s plenty of familiar context here, including a powerful sketch of the former Nazi rocket scientist Wernher von Braun. He’s not especially folksy, or willfully eccentric: the lunar rover was a key element in the Apollo program, and he wants it taken seriously. Swift finds his place by much more ingenious means — by up-ending the Apollo narrative entirely (he would say he was turning it right-side up) so that every earlier American venture into space was preparation for the last three trips to the moon.

He sets out his stall early, drawing a striking contrast between the travails of Apollo 14 astronauts Alan Shepard Jr and Edgar Mitchell — slugging half a mile up the the wall of the wrong crater, dragging a cart — with the vehicular hijinks of Apollo 15’s Dave Scott and Jim Irwin, crossing a mile of hummocky, cratered terrain rimmed on two sides by mountains the size of Everest, to a spectacular gorge, then following its edge to the foot of a huge mountain, then driving up its side.

Detailed, thrilling accounts of the two subsequent Rover-equipped Apollo missions, Apollo 16 in the Descartes highlands and Apollo 17 in the Taurus-Littrow Valley, carry the pointed message that the viewing public began to tune out of Apollo just as the science, the tech, and the adventure had gotten started.

Swift conveys the baffling, unreadable lunar landscape very well, but Across the Airless Wilds is above all a human story, and a triumphant one at that, about NASA’s most-loved machine. “Everybody you meet will tell you he worked on the rover,” remarks Eugene Cowart, Boeing’s chief engineer on the project. “You can’t find anybody who didn’t work on this thing.”

“A wonderful moral substitute for war”

Reading Oliver Morton’s The Moon and Robert Stone and Alan Adres’s Chasing the Moon for The Telegraph, 18 May 2019

I have Arthur to thank for my earliest memory: being woken and carried into the living room on 20 July 1969 to see Neil Armstrong set foot on the moon.

Arthur is a satellite dish, part of the Goonhilly Earth Satellite Station in Cornwall. It carried the first ever transatlantic TV pictures from the USA to Europe. And now, in a fit of nostalgia, I am trying to build a cardboard model of the thing. The anniversary kit I bought comes with a credit-card sized Raspberry Pi computer that will cause a little red light to blink at the centre of the dish, every time the International Space Station flies overhead.

The geosychronous-satellite network that Arthur Clarke envisioned in 1945 came into being at the same time as men landed on the Moon. Intelsat III F-3 was moved into position over the Indian Ocean a few days before Apollo 11’s launch, completing the the world’s first geostationary-satellite network. The Space Race has bequeathed us a world steeped in fractured televisual reflections of itself.

Of Apollo itself, though, what actually remains? The Columbia capsule is touring the United States: it’s at Seattle’s Museum of Flight for this year’s fiftieth anniversary. And Apollo’s Mission Control Center in Houston is getting a makeover, its flight control consoles refurbished, its trash cans, book cases, ashtrays and orange polyester seat cushions all restored.

On the Moon there are some flags; some experiments, mostly expired; an abandoned car.

In space, where it matters, there’s nothing. The intention had been to build moon-going craft in orbit. This would have involved building a space station first. In the end, spooked by a spate of Soviet launches, NASA decided to cut to the chase, sending two small spacecraft up on a single rocket. One got three astronauts to the moon. The other, a tiny landing bug (standing room only) dropped two of them onto the lunar surface and puffed them back up into lunar orbit, where they rejoined the command module and headed home. It was an audacious, dangerous and triumphant mission — but it left nothing useful or reuseable behind.

In The Moon: A history for the future, science writer Oliver Morton observes that without that peculiar lunar orbital rendezvous plan, Apollo would at least have left some lasting infrastructure in orbit to pique someone’s ambition. As it was, “Every Apollo mission would be a single shot. Once they were over, it would be in terms of hardware — even, to a degree, in terms of expertise — as if they had never happened.”

Morton and I belong to the generation sometimes dubbed Apollo’s orphans. We grew up (rightly) dazzled by Apollo’s achievement. It left us, however, with the unshakable (and wrong) belief that our enthusiasm was common, something to do with what we were taught to call humanity’s “outward urge”. The refrain was constant: how in people there was this inborn desire to leave their familiar surroundings and explore strange new worlds.

Nonsense. Over a century elapsed between Columbus’s initial voyage and the first permanent English settlements. One of the more surprising findings of recent researches into the human genome is that, left to their own devices, people hardly move more than a few weeks’ walking distance from where they were born.

This urge, that felt so visceral, so essential to one’s idea of oneself: how could it possibly turn out to be the psychic artefact of a passing political moment?

Documentary makers Robert Stone and Alan Andres answer that particular question in Chasing the Moon, a tie in to their forthcoming series on PBS. It’s a comprehensive account of the Apollo project, and sends down deep roots: to the cosmist speculations of fin de siecle Russia, the individualist eccentricities of Germanys’ Verein fur Raumschiffart (Space Travel Society), and the deceptively chummy brilliance of the British Interplanetary Society, who used to meet in the pub.

The strength of Chasing the Moon lies not in any startling new information it divulges (that boat sailed long ago) but in the connections it makes, and the perspectives it brings to bear. It is surprising to find the New York Times declaring, shortly after the Bay of Pigs fiasco, that Kennedy isn’t nearly as interested in building a space programme as he should be. (“So far, apparently, no one has been able to persuade President Kennedy of the tremendous political, psychological, and prestige importance, entirely apart from the scientific and military results, of an impressive space achievement.”) And it is worthwhile to be reminded that, less than a month after his big announcement, Kennedy was trying to persuade Khrushchev to collaborate on the Apollo project, and that he approached the Soviets with the idea a second time, just days before his assassination in Dallas.

For Kennedy, Apollo was a strategic project, “a wonderful moral substitute for war ” (to slightly misapply Ray Bradbury’s phrase), and all to do with manned missions. NASA administrator James Webb, on the other hand, was a true believer. He could see no end to the good big organised government projects could achieve by way of education and science and civil development. In his modesty and dedication, Webb resembled no-one so much as the first tranche of bureaucrat-scientists in the Soviet Union. He never featured on a single magazine cover, and during his entire tenure he attended only one piloted launch from Cape Kennedy. (“I had a job to do in Washington,” he explained.)

The two men worked well enough together, their priorities dovetailing neatly in the role NASA took in promoting the Civil Rights Act and the Voting Rights Act and the government’s equal opportunities program. (NASA’s Saturn V designer, the former Nazi rocket scientist Wernher Von Braun, became an unlikely and very active campaigner, the New York Times naming him “one of the most outspoken spokesmen for racial moderation in the South.”) But progress was achingly slow.

At its height, the Apollo programme employed around two per cent of the US workforce and swallowed four per cent of its GDP. It was never going to be agile enough, or quotidian enough, to achieve much in the area of effecting political change. There were genuine attempts to recruit and train a black pilot for the astronaut programme. But comedian Dick Gregory had the measure of this effort: “A lot of people was happy that they had the first Negro astronaut, Well, I’ll be honest with you, not myself. I was kind of hoping we’d get a Negro airline pilot first.”

The big social change the Apollo program did usher in was television. (Did you know that failing to broadcast the colour transmissions from Apollo 11 proved so embarrassing to the apartheid government in South Africa that they afterwards created a national television service?)

But the moon has always been a darling of the film business. Never mind George Melie’s Trip to the Moon. How about Fritz Lang ordering a real rocket launch for the premiere of Frau im Mond? This was the film that followed Metropolis, and Lang roped in no less a physicist than Hermann Oberth to build it for him. When his 1.8-metre tall liquid-propellant rocket came to nought, Oberth set about building one eleven metres tall powered by liquid oxygen. They were going to launch it from the roof of the cinema. Luckily they ran out of money.

The Verein für Raumschiffahrt was founded by men who had acted as scientific consultants on Frau im Mond. Von Braun became one of their number, before he was whisked away by the Nazis to build rockets for the war effort. Without Braun, the VfR grew nuttier by the year. Oberth, who worked for a time in the US after the war, went the same way, his whole conversation swallowed by UFOs and extraterrestrials and glimpses of Atlantis. When he went back to Germany, no-one was very sorry to see him go.

What is it about dreaming of new worlds that encourages the loner in us, the mooncalf, the cave-dweller, wedded to ascetism, always shying from the light?

After the first Moon landing, the philosopher (and sometime Nazi supporter) Martin Heidegger said in interview, “I at any rate was frightened when I saw pictures coming from the moon to the earth… The uprooting of man has already taken place. The only thing we have left is purely technological relationships. This is no longer the earth on which man lives.”

Heidegger’s worries need a little unpacking, and for that we turn to Morton’s cool, melancholy The Moon: A History for the Future. Where Stone and Anders collate and interpret, Morton contemplates and introspects. Stone and Anders are no stylists. Morton’s flights of informed fancy include a geological formation story for the moon that Von Trier’s film Melancholy cannot rival for spectacle and sentiment.

Stone and Anders stand with Walter Cronkite whose puzzled response to young people’s opposition to Apollo — “How can anybody turn off from a world like this?” — stands as an epitaph for Apollo’s orphans everywhere. Morton, by contrast, does understand why it’s proved so easy for us to switch off from the Moon. At any rate he has some good ideas.

Gertrude Stein, never a fan of Oakland, once wrote of the place, “There is no there there.” If Morton’s right she should have tried the Moon, a place whose details “mostly make no sense.”

“The landscape,” Morton explains, “may have features that move one into another, slopes that become plains, ridges that roll back, but they do not have stories in the way a river’s valley does. It is, after all, just the work of impacts. The Moon’s timescape has no flow; just punctuation.”

The Moon is Heidegger’s nightmare realised. It can never be a world of experience. It can only be a physical environment to be coped with technologically. It’s dumb, without a story of its own to tell, so much “in need of something but incapable of anything”, in Morton’s telling phrase, that you can’t even really say that it’s dead.

So why did we go there, when we already knew that it was, in the words of US columnist Milton Mayer, a “pulverised rubble… like Dresden in May or Hiroshima in August”?

Apollo was the US’s biggest, brashest entry in its heart-stoppingly exciting – and terrifying – political and technological competition with the Soviet Union. This is the matter of Stone and Anders’s Chasing the Moon, as a full a history as one could wish for, clear-headed about the era and respectful of the extraordinary efforts and qualities of the people involved.

But while Morton is no less moved by Apollo’s human adventure, we turn to his book for a cooler and more distant view. Through Morton’s eyes we begin to see, not only what the moon actually looks like (meaningless, flat, gentle, a South Downs gone horribly wrong) but why it conjures so much disbelief in those who haven’t been there.

A year after the first landing the novelist Norman Mailer joked: “In another couple of years there will be people arguing in bars about whether anyone even went to the Moon.” He was right. Claims that the moon landing were fake arose the moment the Saturn Vs stopped flying in 1972, and no wonder. In a deep and tragic sense Apollo was fake, in the sense that it didn’t deliver the world it had promised.

And let’s be clear here: the world it promised would have been wonderful. Never mind the technology: that was never the core point. What really mattered was that at the height of the Vietnam war, we seemed at last to have found that wonderful moral substitute for war. “All of the universe doesn’t care if we exist or not,” Ray Bradbury wrote, “but we care if we exist… This is the proper war to fight.”

Why has space exploration not united the world around itself? It’s easy to blame ourselves and our lack of vision. “It’s unfortunate,” Lyndon Johnson once remarked to the astronaut Wally Schirra, “but the way the American people are, now that they have developed all of this capability, instead of taking advantage of it, they’ll probably just piss it all away…” This is the mordant lesson of Stone and Andres’s otherwise uplifting Chasing the Moon.

Oliver Morton’s The Moon suggests a darker possibility: that the fault lies with the Moon itself, and, by implication, with everything that lies beyond our little home.

Morton’s Moon is a place defined by absences, gaps, and silence. He makes a poetry of it, for a while, he toys with thoughts of future settlement, he explores the commercial possibilities. In the end, though, what can this uneventful satellite of ours ever possibly be, but what it is: “just dry rocks jumbled”?



“Bloody useless at objects. Bloody brilliant at space”

Playing Lunatick by Antony Gormley and Priyamvada Natarajan for New Scientist, 27 March 2019

VISIT The Store X, a venue for art and design in London’s West End, and you are in for quite a journey. Wearing an HTC Vive headset, you are given an island to explore in Lunatick, a glossy, game-like virtual-reality experience that starts at Kiribati in Micronesia. For a while, you have the run of the place by means of hand controllers, although producers Acute Art plans to use EEG to let you control it with your thoughts.

Don’t get too comfortable. Wandering past a stone platform triggers the space elevator. It lifts you gently off your feet, then propels you through the stratosphere. This long, beautiful and increasingly uncanny transit carries you into the void between the moon and Earth.

Take a breath. Look around you. The geometrical relationship between the sun, Earth and its moon unwinds around you as time skews and the moon swells. Before you know it, you are skating around lunar crater rims, plummeting into craters, flying high, until, losing control again, you are flung into the sun.

Lunatick is the first joint work by British artist Antony Gormley and astrophysicist Priyamvada Natarajan from Yale University. Natarajan visualises the accretion history of black holes, and maps the granularity of dark matter by studying the way it bends light – a phenomenon called gravitational lensing. But she couldn’t resist the idea of giving space a sensual dimension by making the vastness and loneliness of the cosmos tangible.

Artist and scientist bonded over their early love of science fiction. H. G. Wells’s 1901 novel The First Men in the Moonwas Natarajan’s contribution: a fictional journey powered by the mysterious gravity-less mineral cavorite. Gormley, in his turn, recalled C. S. Lewis’s space trilogy that began with Out of the Silent Planet, in which a man travels the solar system pinned in a coffin.

Both influences emerge clearly enough in Lunatick, but the real star of the show isn’t fictional: it is the flyable lunar terrain wrestled into shape by Rodrigo Marques, Acute Art’s chief technology officer, from data sent back by NASA’s Lunar Reconnaissance Orbiter. “There’s something both moving and funny about skating over the surface of the moon,” says Gormley. “I’ve got very fond of skiing along the ridges then down into the crater bottoms.”

Gormley’s art is popular globally, not least because people find it easy to grasp. Never mind the cosmological and philosophical dimensions: what strikes the viewer is how he renders, in solid matter, the building blocks of our lives.

Gormley has been making sculptural art out of wireframes and voxels (three-dimensional pixels), even as architects and games designers having been moving away from model-making into a purely virtual 3D design space. “Until recently, I had no idea what a voxel was,” says Gormley, who has spent more than five years making oddly expressive low-resolution sculptures assembled from cubes and cuboids. His wireframe experiments (assembled from real wires and rods) are older still, dating back to the late 1990s.

Why has Gormley chosen to enter the virtual realm now? First, Lunatick was a chance to explore a medium that, he says, is “bloody useless at objects and bloody brilliant at space”. Objects, ultimately, are bodies: VR is hobbled because it can’t convey their mass and tactility. But space is different. We perceive space primarily through seeing, which means VR can convey scale and immensity to a sublime degree.

But why should an artist best known for exploring the sculptural possibilities of the human body (particularly his own) be keen on disembodied space? The image of body-as-spaceship crops up intermittently in Gormley’s work, but rarely so urgently. He says he is haunted by an image of long-haul flight, where the shutters are down and everyone is watching movies: virtual versions of human life.

“I want this piece to say to people, ‘Break out!’,” he says. “Of course we get very obsessed with human matters. But there are bigger affairs out there. Recognise your cosmic identity!”

NASA, Kennedy and me

(Not that I wish to oversell this, you understand…)

Come along to New Scientist Live at 2.30pm on Saturday 22 September and you’ll find me talking to documentary-maker Rory Kennedy about how NASA shapes life on the ground, how it juggles the competing promises of the Moon and Mars, and how public and private space initiatives can work together. Kennedy will also be discussing her life as a documentary film-maker,  her memories of her uncle “Jack” Kennedy, and how the Apollo program inspired her philanthropic career.

Tickets and details here

“We don’t know why we did it”

Two views of the US space programme reviewed for New Scientist, 2 July 2014

“WE HAVE no need of other worlds,” wrote Stanislaw Lem, the Polish science fiction writer and satirist in 1961. “We need mirrors. We don’t know what to do with other worlds. A single world, our own, suffices us; but we can’t accept it for what it is.”

A few years later, as NASA’s advocates hunted for suitable justification for the US’s $24 billion effort to put a man on the moon, they began to invoke humanity’s “outward urge” – an inborn desire to leave our familiar surroundings and explore strange new worlds.

A hastily concocted migration instinct might explain tourism. But why astronauts visited the moon, described by the 1940s US columnist Milton Mayer as a “pulverised rubble… like Dresden in May or Hiroshima in August”, requires a whole other level of blarney.

In Marketing the Moon: The selling of the Apollo lunar program, released earlier this year, David Meerman Scott and Richard Jurek curated that blarney in their illustrated account of how Apollo was sold to a public already paying a bloody price for the Vietnam war.

Historian Matthew Tribbe, on the other hand, looks in an almost diametrically opposite direction. His No Requiem for the Space Age sweeps aside the Apollo programme’s technocratic special pleading – and the subsequent nostalgia – to argue that Americans fell out of love with space exploration even before Neil Armstrong took his first steps on the moon in July 1969.

There is no doubt that national disillusionment with the space programme swelled during the 1970s, as counter-cultural movements sent the US on “the biggest introspective binge any society in history has undergone”. But digging beneath this familiar narrative, Tribbe also shows that opposition to Apollo was both long-standing and intellectually rigorous.

The Nobel laureate physicist Max Born called Apollo “a triumph of intellect, but a tragic failure of reason”. And novelist Norman Mailer considered it “the deepest of nihilistic acts – because we don’t know why we did it”.

Apollo was the US’s biggest, brashest entry in its heart-stoppingly exciting – and terrifying – political and technological competition with the Soviet Union. By the time Apollo 11 was launched, however, that race was already won, and only a fanatic (or a military-industrial complex) would have kept running.

There was a fairly concerted attempt to sell Apollo as science. But that never rang true, and anyway what we really seek in space, as the science fiction writer Arthur C. Clarke told the American Aeronautical Society in 1967, is “not knowledge, but wonder, beauty, romance, novelty – and above all, adventure”. Apollo was supposed to offer the world’s most technologically advanced nation a peacetime goal as challenging and inspiring as war.

But the intractability of the war in Vietnam put paid to John F. Kennedy’s fine words to Congress on 25 May 1961, about sending an American safely to the moon before the end of the decade. As the Washington Evening Star columnist Frank R. Getlein observed: “The reason you have a moral equivalent of war is so you don’t have to have war… For us Americans, unfortunately, the moral equivalent of war has turned out to be war.”

Tribbe argues that popular enthusiasm was doused as soon as people realised just who was going into space – not them, but the representatives of the very technocratic power structure that was wreaking havoc on Earth.

This, you could argue, was hardly NASA’s fault. So it is reassuring, among all this starkly revealed futility, to see Tribbe expressing proper respect and, indeed, real warmth for NASA and its astronauts. NASA had labelled them “super-normal”; with such a moniker, it was perhaps inevitable that they failed to capture hearts and minds as easily as everyone had assumed they would. While public uninterest is Tribbe’s theme, he does not lay the blame for it at NASA’s door.

Explorations rarely inspire contemporary stay-at-homes. For example, over a century elapsed between Columbus’s initial voyage and the first permanent English settlements. Lem was right. We don’t need alien places. We need an ever-expanding supply of human ones. The moon may yet provide them. This, at least, is the compelling and technically detailed argument of Arlin Crotts’s forthcoming book The New Moon: Water, exploration, and future habitation – a perfect speculative antidote for those who find Tribbe’s history disheartening.

Tribbe quotes an unnamed journalist who wrote, during the Vietnam war: “The moon is a dream for those who have no dreams.” This may sum up many of the problems people had with Apollo in the 1970s. But Tribbe is no pessimist, and history need not demoralise us. Times and technologies change, so do nations, and so, come to think of it, do dreams.

What colour is the moon?


Thursday, 1 March at 4pm – my Science Museum debut!

We humans acquired the means, very late in our evolution, to perceive a world of colour – and every day we spend phenomenal amounts of energy making the world even more colourful than it would otherwise be, with face paints and aniline dyes, fabrics and photographs, paints, powders and moving images everywhere.

But the further we leave our terrestrial environments behind, the more we confront a relatively colourless universe. At best, the Martian sky is mauve. The rings of Saturn are dun brown. The Moon is black and white. Or is it? Today, with a decent telescope and a digital camera, any keen amateur astronomer can demonstrate that the Moon is full of colour – but can our unaided eyes, so spoiled by life on earth, ever appreciate its de-saturated motley?

Exposed to radiations from which they were normally shielded by the Earth’s atmosphere, the earliest astronauts – balloonists with the US Air Force’s Man High and Excelsior projects –saw colours they conspicuously failed to identify on a Pantone chart. There are, after all, new colours to be discovered in space – but to see them, we need new eyes…

What Colour is the Moon? is a journey in space and time. We will see how colours, colour words, and the demands of art and industry have altered and enriched our understanding of colour. On the way we’ll re-enact Edwin Land’s startling “retinex” experiments in colour vision, and enjoy some (literally) dazzling optical illusions.

And we’ll journey across the lunar surface, taking in a spectrum that stretches from the sky-blue cast of the Mare Tranquillitatis, through the mysterious mustards near the crater Aristarchus to the red-brick “lakes” west of Montes Haemus.

The talk will be in the Science Museum’s Lecture Theatre on the ground floor of the museum. It’s open to all. No booking is necessary and seats are available on a first come first serve basis.