A message shaped by what we feared others might think
In the late 1970s, as humanity prepared to send its most ambitious message into interstellar space, the question of how to represent the human body became a mirror held up to American cultural anxiety. Carl Sagan's team, drawing on the lessons of Pioneer 10's controversial nude plaque, sought to include a photograph of a pregnant woman and a man — a scientifically precise gesture toward our biology and our continuity. NASA's veto transformed that photograph into a silhouette, a shape that preserved the pregnancy but erased the flesh, sending into the cosmos not what we are, but what we were willing to admit to being.
- The 1972 publication of Pioneer 10's nude plaque triggered immediate public backlash, with newspapers literally erasing human anatomy before printing — a sign that scientific honesty and cultural comfort were already in conflict.
- Five years later, Sagan's Voyager team pushed further, proposing a real photograph of a nude pregnant couple to communicate something no clothed figure could: that human life begins inside the female body.
- NASA's institutional memory of the Pioneer controversy overrode the scientific argument, and the photograph was rejected before it could become another front-page scandal.
- The compromise silhouette — black outline, no skin, no face, no genitals — still carried the fetus inside the woman's form, a quiet act of preservation within the constraints of censorship.
- Curiously, a fully anatomical man and woman did make it onto the record inside a vertebrate evolution diagram, suggesting the line between acceptable and unacceptable was less principled than situational.
- The record launched carrying a portrait of humanity shaped less by what we wished to say than by what we feared others — on Earth — might think.
In the spring of 1971, Carl Sagan had three weeks to design humanity's first message to the cosmos. Working with Frank Drake and artist Linda Salzman Sagan, he produced a gold-anodized aluminum plaque for Pioneer 10 bearing line drawings of two unclothed humans — a man with his hand raised, a woman beside him. Linda Sagan's reasoning was practical: clothing would favor some cultures over others, and an anatomically complete body would tell an alien biologist more than a dressed one ever could.
The American public disagreed. When Pioneer 10 launched in March 1972, newspapers printed the plaque with genitals removed and nipples erased. NASA had, it seemed, misjudged its own country's tolerance for the human form.
Five years later, assembling the far more ambitious Voyager Golden Record — a copper disk carrying greetings, music, natural sounds, and over a hundred images — Sagan's team tried again. They proposed including an actual photograph of a nude pregnant woman and man holding hands. The pregnancy was the point: it would communicate something essential about human reproduction that no clothed figure could. NASA vetoed it, haunted by the Pioneer controversy. Artist Jon Lomberg later described the rejected image as depicting the couple 'quite unerotically holding hands.'
What survived was a silhouette — the same composition, but rendered in pure black outline, stripped of skin and detail. Yet the team preserved one crucial element: inside the woman's outline, they drew the fetus, visible and unmistakable. The biological fact of human gestation made it through the censorship intact.
Somewhere else on the record, a fully anatomical man and woman appeared in a vertebrate evolution diagram — approved, perhaps because the scientific framing provided sufficient cover, or perhaps through simple institutional inconsistency. The silhouette, meanwhile, became humanity's official face to the stars: a compromise that satisfied no one completely, a message shaped not by what we wanted to say about ourselves, but by what we were afraid others might think.
In the spring of 1971, Carl Sagan had three weeks to design humanity's first message to the cosmos. NASA had just greenlit the idea of sending something aboard Pioneer 10, a spacecraft being readied for launch that would eventually become the first human artifact to escape the solar system. Working with astronomer Frank Drake and his wife, artist Linda Salzman Sagan, he produced a six-by-nine-inch gold-anodized aluminum plaque. It would be bolted to the spacecraft's antenna support struts and carry, in simple line drawings, the essential facts about who we are: a hydrogen atom, a pulsar map showing where Earth sits in the galaxy, the layout of our solar system, and on the right side, two unclothed human figures—a man with his hand raised in greeting, a woman standing beside him.
When Pioneer 10 launched in March 1972, the plaque traveled with it into the void. But before it could reach any distant civilization, American newspapers got hold of the image. The reaction was swift and telling. One publication printed the plaque with the man's genitals removed entirely. Another went further, erasing both his genitals and the woman's nipples. Linda Sagan's reasoning for the nudity had been straightforward: any choice of clothing would privilege some cultures over others, and an anatomically complete human body would be more useful to an alien biologist than a dressed one. The American public's response suggested NASA had misread its own country's comfort with the human form.
Five years later, as NASA prepared Voyager 1 and Voyager 2 for launch, Sagan found himself chairing the committee again, this time assembling something far more ambitious than a metal plate. The Golden Record would be a twelve-inch gold-plated copper phonograph disk carrying greetings in fifty-five languages, natural sounds from Earth, music spanning from Bach to Chuck Berry, a recording derived from the brain waves of Ann Druyan, and more than one hundred still images encoded as analog video. The team wanted to correct what Pioneer had been forced to leave incomplete. They wanted to include an actual photograph—not a line drawing, but a real image—of two unclothed humans: a man and a pregnant woman, holding hands. The pregnancy itself was the point. It would show an alien intelligence something fundamental about human biology that no clothed figure could convey.
NASA said no. The decision came down from above, a veto born from the memory of what had happened five years earlier. Jon Lomberg, an artist working on the record, later described the rejected photograph in the team's 1978 book Murmurs of Earth as depicting "a man and a pregnant woman quite unerotically holding hands." The scientific intent was irrelevant to the institutional fear.
What made it onto the record instead was a compromise: a silhouette. The same composition remained—man and pregnant woman, hands clasped—but rendered as pure black outline against white, stripped of skin, faces, genitals, and any detail a newspaper editor might feel compelled to alter. Yet the team preserved something essential. Inside the woman's outline, they drew the fetus, visible and unmistakable. The fact of human gestation, the biological reality that our young develop inside the female body, survived the censorship.
One nude couple did slip through. Elsewhere on the record, Jon Lomberg had drawn a Diagram of Vertebrate Evolution showing an anatomically correct man and woman positioned as the endpoint of a sequence stretching back through earlier vertebrate forms. NASA approved it. Perhaps the scientific framing made the difference—context as cover, or perhaps simply an inconsistency in institutional caution. In that version, the woman raises her hand in greeting while the man stands beside her, a reversal of the Pioneer pose.
The silhouette became the face of humanity sent to the stars, a compromise that satisfied no one completely but offended no one enough to stop the launch. It was a message shaped not by what we wanted to say about ourselves, but by what we were afraid others might think.
Notable Quotes
A man and a pregnant woman quite unerotically holding hands— Jon Lomberg, describing the rejected Voyager photograph
Any choice of clothing would represent only some cultures, and that an anatomically accurate human was more useful to an alien biologist— Linda Salzman Sagan's reasoning for depicting nude figures on Pioneer
The Hearth Conversation Another angle on the story
Why did NASA care what American newspapers printed about the Pioneer plaque? The message wasn't for us.
Because NASA answers to Congress and the public. A controversy at home can kill a program before it leaves the ground. The plaque was real, physical, and people could see it. That made it different from an abstract mission.
But Linda Sagan's logic was sound—clothing is cultural, nudity is universal. Didn't anyone defend that?
They did, and they lost. The team believed in the science. But institutional fear moves faster than argument. One newspaper airbrushing genitals was enough to signal danger.
So by Voyager, they'd learned their lesson?
They'd learned that NASA wouldn't take the risk again. But the team still wanted to show what human reproduction actually looks like. That's why they fought for the photograph.
And the silhouette was the price of getting anything at all?
Exactly. You can't send a photograph of pregnancy without showing the pregnancy. The silhouette let them keep that fact while removing everything that made an editor nervous.
Did it work? Did anyone complain about the silhouette?
No. It was invisible as controversy. That's the real cost—not the fight, but the silence that follows compromise.
What would an alien make of it?
They'd see what we looked like, roughly. But they'd also see that we were afraid to show ourselves clearly. That's a message too.