The first iterations of space capsules in the Mercury program did not have a window. Astronauts, at the time all pilots, demanded one be put in.
During the Apollo missions to the Moon, it was the astronauts who suggested bringing a camera on board. NASA agreed, thinking it would make sense to take pictures of potential landing spots. During the Apollo 8 mission, which orbited the Moon, astronaut Frank Borman, struck by the power of seeing Earth over the Moon’s horizon, felt compelled to take a picture of it.
Upon his return and after a bit of touch-up, the photo was released to the public. That image, and others like it, captured the world’s attention. Seeing the Earth suspended in space generated feelings of awe, wonder, appreciation, humility and a different sense of place and self than humans had ever had about our planet and ourselves.
Since then, more than 500 humans have travelled to space. “The Overview Effect” by researcher Frank White explores the feelings, thoughts, and experiences space explorers have had when looking back at Earth–and what those feelings mean for the future of space exploration and human evolution.
The book is broken into two parts. The first is White’s exposition into what the Overview Effect is, and what the implications of it are. He wonders why humans have that experience, and also delves into how it changes astronauts’ perspective of Earth, life and our place in the solar system. As he explains the varying degrees and separate intensities or varieties of the Overview Effect–based on what the astronauts did in space and how far they went and how long they were there–he extrapolates what the effects will be on humans who, eventually, go even further into space and for longer durations than has been experienced to date.
For those who rode the space shuttle for merely a week, or even some of the Mercury astronauts who spent less than a full day in space, the Overview Effect is still present, but is intuitively not as strong or overwhelming as those who lived on a space station for months at a time. Similarly, Apollo astronauts who travelled to the Moon (regardless of whether they landed or walked on it) and therefore saw the Earth from a great distance, gained a much deeper appreciation for the vastness of space, and how fragile (or strong and powerful and self-sustaining) the Blue Marble really is. And for those astronauts who went on space walks, and experienced no barrier between themselves and outer space and the Earth save for the visor on their helmet, their sense of being was altered in ways that can only truly be understood by those who have had that experience.
The second part of the book is a collection of interviews of astronauts. The book is long and repetitive, if not thorough. It drags, but at the same time, each and every interview reflects certain themes, enough to say that there is something universal and consistent about the experience of seeing Earth from space.
Almost all astronauts want to return to space. They want to experience again that sensation of seeing Earth from above, and also the feelings of weightlessness in a zero gravity environment. The experiences of weightlessness is no small matter; it’s one of the things each astronaut remarks upon about their space experience. It’s noted as the biggest difference between life up there and down here. And White parlays that into his thoughts about human evolution. What happens to the human body after years of life in zero gravity? How would a baby born in a zero gravity environment develop? Without the need for muscles to move around he supposes our bodies would evolve to look much like the way we depict aliens look like: big heads, small arms and legs, lithe torsos.
And when one considers how different the experiences of Apollo astronauts is from those who merely orbited the Earth, what would the impacts be on humans who travel to someplace like Mars, where Earth is barely visible? How would humans evolve when being and living on Earth, when being tethered to the Earth, is no longer part of their existence?
One of the ideas that White promotes, which is supported by several of the astronauts he interviews, is that if only world leaders could gather in space, and look down upon our shared home from that vantage point, together, they would see that our world is naturally a borderless one and finite. If only they could see, if only they could have that experience and vantage point, if only…
The roots of the modern environmental movement are tied back to the Blue Marble image (though not necessarily its origins). Seeing our home from the outside gives us an understanding, literally a perspective of the home we all share. Just like our own individual home, which we clean and tend to, so must we do the same, but together, for our planet.
I’ve long been captivated by the idea of going to and being in outer space. Not so much wondering what space is like, but the experience of leaving our home planet–and then, as this book shows, looking back. Is there any other experience so compelling and moving, so adventurous and historically novel, still, than leaving, if only for hours or days or months at a time, our home planet?
Yes, I’m curious about the solar system and other planets. But what this book helped crystalize for me is that my intuition about the experience of being in space is correct: that looking back at our planet is one of the most powerful, inspiring, potentially life-altering experiences a human can experience. We are a long way away, of course, from the masses being able to sense the Overview Effect.
But if there’s something to hope for in these dispiriting times, it is that there is a way to broaden our understanding and perception, something that can unify as humans, as citizens of a shared planet. Imagine starting your day by looking at that image–and attempting to carry, all day long, the emotions and wonder and awe and unifying elements of those feelings.
We’re making quite a mess of our society and our environment. If we’re looking for a way to collectively change the way we see the Earth and all its inhabitants, we might want to think about how to accomplish that, not figuratively, but literally.