Essay — From the December 2012 issue

Our Place in the Universe

Face to face with the infinite

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My most vivid encounter with the vastness of nature occurred years ago on the Aegean Sea. My wife and I had chartered a sailboat for a two-week holiday in the Greek islands. After setting out from Piraeus, we headed south and hugged the coast, which we held three or four miles to our port. In the thick summer air, the distant shore appeared as a hazy beige ribbon—not entirely solid, but a reassuring line of reference. With binoculars, we could just make out the glinting of houses, fragments of buildings.

Then we passed the tip of Cape Sounion and turned west toward Hydra. Within a couple of hours, both the land and all other boats had disappeared. Looking around in a full circle, all we could see was water, extending out and out in all directions until it joined with the sky. I felt insignificant, misplaced, a tiny odd trinket in a cavern of ocean and air.

Naturalists, biologists, philosophers, painters, and poets have labored to express the qualities of this strange world that we find ourselves in. Some things are prickly, others are smooth. Some are round, some jagged. Luminescent or dim. Mauve colored. Pitter-patter in rhythm. Of all these aspects of things, none seems more immediate or vital than size. Large versus small. Consciously and unconsciously, we measure our physical size against the dimensions of other people, against animals, trees, oceans, mountains. As brainy as we think ourselves to be, our bodily size, our bigness, our simple volume and bulk are what we first present to the world. Somewhere in our fathoming of the cosmos, we must keep a mental inventory of plain size and scale, going from atoms to microbes to humans to oceans to planets to stars. And some of the most impressive additions to that inventory have occurred at the high end. Simply put, the cosmos has gotten larger and larger. At each new level of distance and scale, we have had to contend with a different conception of the world that we live in.

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is a physicist and novelist who teaches at MIT. His novel Mr g: A Novel About the Creation was published in January 2012 by Pantheon.

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  • Frederick S.

    I enjoyed Alan Lightman

  • Beard Steel

    As a magazine subscriber, what is preventing me from posting
    a copy of the full article in this comment?
    The novel abstract thoughts of enveloping into an infinite loop serve
    just as much purpose as looking at the numbers.
    Is the universe a mental construct or better yet does the perimeter of
    the universe loop into the very tiniest atoms that define us originally?

    Wrapping my mind around this soothing article, my thoughts
    stuttered upon the second to last paragraph.
    The

  • Caramx

    I thought we already were “out there looking around” on starry nights while we speed around the sun at 67,000 mph.

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