Consider the scale. The Earth’s circumference is approximately 40,000 kilometers. The atmosphere is a thin, tenuous skin. On March 1, 1999, Bertrand Piccard and Brian Jones lifted off from the Swiss Alps in the Breitling Orbiter 3, a balloon envelope taller than the Statue of Liberty. Their goal was a line drawn in the mind, a closed loop around the planet. For nineteen days, they existed in a suspended state.
They were not flying in the conventional sense. They were drifting, a cork on the river of the jet stream. Their capsule was a cramped, utilitarian pod hanging beneath a vast dome of helium and hot air. From their vantage point, between 6,000 and 11,000 meters, the world lost its detail. Mountains became wrinkles. Oceans were sheets of hammered metal. The borders that defined conflict and politics were invisible. The only sounds were the hiss of the burners, the hum of instruments, and their own breathing.
They moved with a patient, celestial slowness. The balloon was a tiny planetesimal orbiting a much larger body, its path dictated by layers of wind. They crossed the Sahara, the Arabian Peninsula, India, China, the Pacific, Central America, and the Atlantic. They saw sunrises that painted the curvature of the planet in bands of violet and orange. They saw the profound black of space above them. On March 21, having traveled 45,755 kilometers, they landed in the Egyptian desert. The loop was closed. They had not conquered anything. They had simply ridden the physics of the atmosphere in a fragile vessel until they returned to their starting point, having never touched the ground. It was a demonstration of a simple, profound fact: the planet is whole, and it is possible to travel all the way around it using only the quiet, immense forces of its own sky.