New York, a quiet room, a blindfold. A 27-year-old woman lets her brain tell a silent story for a full hour. Two days earlier, she had just become engaged by phone to the man who conceived this extraordinary experiment. Her name: Ann Druyan. Her thoughts were about to leave the solar system.
- On June 3, 1977, Ann Druyan recorded an hour of EEG in New York, two days after her telephone engagement with Carl Sagan
- This EEG, compressed into one minute, was etched onto the Voyager Golden Record alongside greetings in 55 languages, music from diverse cultures, and a map of pulsars
- Nearly fifty years later, Voyager 1 continues its journey more than 25 billion kilometers from Earth, carrying this intimate trace of human thoughts
- A crazy idea born from love and science
- One hour of human thoughts compressed into one minute
- A love message sent to eternity in space
A Crazy Idea Born of Love and Science
In 1977, NASA prepared to launch the Voyager probes toward the outer reaches of the solar system. On board, a singular object: an gold-plated copper disk, conceived as a cosmic bottle thrown into the sea of space. Its mission is simple to state, yet daunting to accomplish: to summarize humanity for potential extraterrestrial interlocutors.
Ann Druyan held a pivotal role in this somewhat audacious project as the creative director of the Voyager Interstellar Message Project. It was her idea, perhaps bold for the era, to engrave on this disk not words or images, but the activity of a human brain. An electroencephalogram, literally the electrical traces of a thought taking shape.
One detail remained: who would lend their brain to the exercise? Unsurprisingly, the team chose Druyan herself as the test subject. But a few days before the recording, her life shifted onto a radically different plane. On June 1, 1977, Carl Sagan, the renowned astrophysicist and project director, gave her what she would later call a wonderfully important telephone call. The two had just become engaged.
One Hour of Human Thoughts Compressed into One Minute
Two days after the call, on June 3, 1977, Ann Druyan went to a New York laboratory for the recording. The procedure lasts a full hour, with her eyes blindfolded, connected to all the human monitoring equipment available at the time. The EEG captures the electrical activity of her brain, while an electrocardiogram records her heartbeats simultaneously.
To give this hour meaning and not mere neurological background noise, Druyan had prepared a mental script in advance. A kind of inner itinerary, blending abstract ideas with historical figures, intended to guide the thread of her thoughts throughout the session. A way of giving direction to this silent journey inside herself.
Technically, recording a full hour of raw signals onto the disk was impossible. The engineers therefore electronically compressed the whole thing into one minute of sound, a kind of audio summary of this brain activity. This compact file then joined the other contents of the Voyager Golden Record, the gold-plated copper disk mounted on the two probes before launch.
A Love Message Sent to Eternity in Space
What few people knew at the time of the recording is that this minute of sound carried a sentimental imprint. According to Druyan herself, her thoughts during the session were suffused with the emotion of her recent engagement to Carl Sagan. The couple would marry four years later, in 1981, sealing a story that had literally begun traveling into space even before their wedding.
The golden disk is of course not limited to this recording. It also contains greetings in 55 different languages, music from a multitude of cultures, a map of pulsars that can help locate the solar system, and a uranium-based clock providing a temporal reference to anyone who could decipher it. Druyan’s EEG sits within this whole as the most intimate, most personal touch of the entire message.
Nearly fifty years after its launch, Voyager 1 continues its journey farther and farther. In April 2026, engineers at the Jet Propulsion Laboratory had to switch off the LECP instrument, devoted to studying low-energy charged particles, to conserve the probe’s remaining energy, at a distance of over 25 billion kilometers from Earth. In November of the same year, it is expected to cross the symbolic distance of one light-day, roughly 25.9 billion kilometers traveled.
Somewhere in this vast silence, a minute of human thoughts continues its journey, carried by a disk that keeps drifting farther away. It tells a love story that began with a phone call, extended by a blindfolded meditation, and transformed into a cosmic message. Long after its authors have disappeared, this trace is likely to continue wandering among the stars, a discreet witness to a moment when science and emotion converged.
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