Part I
Thresholds
“For forty-nine months between 1968 and 1972 two dozen Americans had the great good fortune to briefly visit the Moon. Half of us became the first emissaries from Earth to tread its dusty surface. We who did so were privileged to represent the hopes and dreams of all humanity. For mankind it was a giant leap, for a species that evolved from the stone age to create sophisticated rockets and spacecraft that made a Moon landing possible. For one crowning moment, we were creatures of the cosmic ocean, an epoch that a thousand years hence may be seen as the signature of our century.” — Edwin “Buzz” Aldrin Jr., astronaut
• • •IN 1956, WHEN ONLY A FEW MEN HAD FLOWN high enough to cross the boundary of space (the “threshold”) and be awarded their astronaut wings—and no man-made object had yet orbited the Earth—a dramatic movie was released about our efforts to reach space.
On the Threshold of Space took a behind-the-scenes look at the program to understand the physiological and psychological effects on people of moving at high speeds, ascending to extreme altitudes, and being confined in small volumes for durations representative of space missions. At the time, it was not known whether people could even live in space, so every possible measure was taken to ensure the best chance of survival. The success of those efforts was demonstrated by the
Apollo 11 landing on the Moon in 1969.
There is another threshold of space that is not physical, but rather is a threshold of awareness. Those who have been in space have described the experience in various ways. Some have recalled that on the first day, when looking at the Earth, they looked for their country, on the second day they looked for their continent, but by the third day in orbit they saw the Earth as a whole. The common result is a transformed awareness and they realize that a forest fire or oil spill in one place ultimately affects the entire planet. From the ground, we see only a tiny portion of the Earth at a time and the entire Earth seems to be quite large. From space, however, when the entire Earth can be seen against the background of the vastness of space the scale shifts, producing what has been called the “overview effect.” As James B. Irwin, an
Apollo 15 mission astronaut, described the experience: “As we got further and further away, [the Earth] diminished in size. Finally it shrank to the size of a marble, the most beautiful you can imagine. That beautiful, warm, living object looked so fragile, so delicate, that if you touched it with a finger it would crumble and fall apart. Seeing this has to change a man.”
Those of us not so privileged to directly view the Earth from space have a glimpse of that experience when we look at photographs of the Earth in space. As Aldrin says in the lead-in quote, we are “creatures of the cosmic ocean.” Those who
feel that truth, cross the threshold of awareness of our place in the cosmos.