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Starquake.pdf

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The call that Pierre had been dreading came. "Request asteroid O-l be reprogrammed to arrive at<br />

space-<br />

time point given by following coordinates," said the image of Cliff-Web. There followed anx,y,z,q,f,l,t<br />

listing of coordinates in the Dragon's Egg space-time system. The requested orbit went far down in the<br />

gravity well of Egg so that the ten percent time rate and frame drag difference between deep space and<br />

the surface of the neutron star was significant.<br />

Cliff-Web was not used to talking to humans. He forgot to always assume the same position each time<br />

he checked in at the screen for a reply, so his image flickered every fifth of a second.<br />

Pierre hesitated. The image flickered.<br />

The real decision had been made long ago. Pierre touched the screen in front of him, and the coordinates<br />

were transferred to the herder rockets that kept Otis on its desired path. Pierre then pushed theexecute<br />

square on his touch screen. The engines on the herder rockets flared. Within seconds Otis was on a new<br />

trajectory that would take it within a few meters of the surface of Dragon's Egg.<br />

21:02:20 GMT TU6SDAY 21 JUNE2050<br />

Push-Pull looked up from his testing apparatus to stare out at the herder rockets that swarmed around<br />

Otis. "There seems to be some activity in the large human spacecraft surrounding us."<br />

"I noticed," said Cliff-Web. "What is the status of the high flow-rate tubes?"<br />

"They passed flow tests at twice design pressures, and failed just above that," said Push-Pull.<br />

"Good, but too good. Reduce their thickness by a half-dozeth and test them again. I want this machine<br />

light enough to jump itself 40 meters off Egg."<br />

The construction of the four-centimeter-diameter self-levitating gravity lander took significantly less time<br />

than the larger machine. They were finished with nearly a great of turns left before Otis reached periapsis.<br />

Steel-Slicer came to see the completed lander. It was a torus sitting inside a larger torus.<br />

"What's its name?" Steel-Slicer asked.<br />

"It's just the lander," Cliff-Web replied with obvious annoy-<br />

ance. "It doesn't have a name except Egg Surface Descent Craft, if you want to be formal."<br />

"All ships have to have a name," said Steel-Slicer. "Since it flies above the surface of Egg it should have<br />

the name of some flying animal."<br />

"Thereare no flying animals on Egg." Cliff-Web was even more annoyed.

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