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THE HOLE MAN One day Mars will be gone. Andrew Lear says that it will start with violent quakes, and end hours or days later, very suddenly. He ought to know. It's all his fault. Lear also says that it won't happen for from years to centuries. So we stay, Lear and the rest of us. We study the alien base for what it can tell us, while the center of the world we stand on is slowly eaten away. It's enough to give a man nightmares. It was Lear who found the alien base. We had reached Mars: fourteen of us, in the cramped bulbous life-support system of the Percival Lowell. We were circling in orbit, taking our time, correcting our maps and looking for anything that thirty years of Mariner probes might have missed. We were mapping mascons, among other things. Those mass concentrations under the lunar maria were almost certainly left by good-sized asteroids, mountains of rock falling silently out of the sky until they struck with the energies of thousands of fusion bombs. Mars has been cruising through the asteroid belt for four billion years. Mars would show bigger and better mascons. They would affect our orbits. So Andrew Lear was hard at work, watching pens twitch on graph paper as we circled Mars. A bit of machinery fell alongside the Percival Lowell, rotating. Within its thin shell was a |
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