"I am two-hundred and twenty-seven million kilometers from the sun. Its light is already ten minutes old. It will not reach Pluto for another two hours. Two hours into my future, I observe meteorites from a glass balcony, thinking about my father. Twelve seconds, into my past, I open my fingers. The photograph is falling. I am watching the stars. Halley's Comet tumbles through the solar system on its great, seventy-six year ellipse. My father admired the sky for its precision. He repaired watches. It's 1945, I sit in a Brooklyn kitchen, fascinated by an arrangement of cogs on black velvet. I am sixteen years old. It is 1985. I am on Mars. I am fifty-six years old. The photograph lies at my feet; falls from my fingers, is in my hand. I am watching the stars, admiring their complex trajectories through space and time. I am trying to give a name to the force that set them in motion."