Part One

A.D. 2056


1

Morning was flowing over the red-green planet. "What do we know?" The delicate brown face of Dorothy Leeds kindled with questions. "Summarize it."

Edmund Spearman achieved casualness. "Diameter and mass a trifle more than Earth's, larger orbit around a larger sun. A year of 458 days, twenty-six hours each. Moderate seasonal changes, axial tilt less than Earth's, orbit less elliptical. See the smallness of the north polar ice cap? The equatorial region—much too hot; the rest is subtropical to temperate. We should go down (if we do) near the 50th parallel—north, I'd say. Too much desert in the southern hemisphere. Might be hot winds, sandstorms."