“How can you be so calm?” she asked.
“Panic won’t help. We need to know what’s going on before we can plan intelligently. Please transfer the comms to me.”
“Holy shit,” Amos said as he climbed into the ops deck. The deck hatch shut with a punctuating bang.
“I don’t remember ordering you to leave your post, sailor,” Holden said.
“Plan intelligently,” Naomi said like they were words in a foreign language that she almost understood. “Plan intelligently.”
Amos threw himself at a chair hard enough that the cushioning gel grabbed him and kept him from bouncing off.
“Eros is really f**king big,” Amos said.
“Plan intelligently,” Naomi repeated, speaking to herself now.
“I mean, really f**king big,” Amos said. “Do you know how much energy it took to spin that rock up? I mean, it took years to do that shit.”
Holden put his headset on to drown Amos and Naomi out, and called up Alex again.
“Alex, is Eros still changing velocity?”
“No, Cap. Just sitting there like a rock.”
“Okay,” Holden said. “Amos and Naomi are vapor locked. How are you doing?”
“Not taking my hands off the stick while that bastard is anywhere in my space, that’s for damn sure.”
Thank God for military training, Holden thought.
“Good, keep us at a constant distance of five thousand klicks until I say otherwise. Let me know if it moves again, even an inch.”
“Roger that, Cap,” said Alex.
Holden took off his headset and turned to face the rest of the crew. Amos was looking at the ceiling, ticking points off with his fingers, his eyes unfocused.
“—don’t really remember the mass of Eros off the top of my head… ” he was saying to no one in particular.
“About seven thousand trillion kilos,” Naomi replied. “Give or take. And the heat signature’s up about two degrees.”
“Jesus,” the mechanic said. “I can’t do that math in my head. That much mass coming up two degrees like that?”
“A lot,” Holden said. “So let’s move on—”
“About ten exajoules,” Naomi said. “That’s just off the top of my head, but I’m not off by an order of magnitude or anything.”
Amos whistled.
“Ten exajoules is like, what, a two-gigaton fusion bomb?”
“It’s about a hundred kilos converted directly to energy,” Naomi said. Her voice began to steady. “Which, of course, we couldn’t do. But at least whatever they did wasn’t magic.”
Holden’s mind grabbed on to her words with an almost physical sensation. Naomi was, in fact, about the smartest person he knew. She had just spoken directly to the half-articulated fear he’d been harboring since Eros had jumped sideways: that this was magic, that the protomolecule didn’t have to obey the laws of physics. Because if that was true, humans didn’t stand a chance.
“Explain,” he said.
“Well,” she replied, tapping on her keypad. “Heating Eros up didn’t move it. So I assume that means it was waste heat from whatever it was they actually did.”
“And that means?”
“That entropy still exists. That they can’t convert mass to energy with perfect efficiency. That their machines or processes or whatever they use to move seven thousand trillion tons of rock wastes some energy. About a two-gigaton bomb’s worth of it.”
Magic, a small voice at the back of his mind said again.
No, not magic. Humans had stealth ships too. It was just a matter of absorbing the radar’s energy rather than reflecting it. But suddenly, keeping the asteroid in visual range became all the more important. Eros had shown that it could move fast and maneuver wildly, and it was now invisible to radar. It was entirely possible that a mountain-sized rock could disappear completely.
Gravity began to pile up as the Roci chased Eros toward the sun.
“Naomi?”
She looked up at him. The fear was still in her eyes, but she was holding it together. For now.