“Sensors, let’s get the dish out there,” Oscar said. “Check for emissions.”

Another electromuscle arm snaked out from its ceiling recess, carrying a furled dish. It went through the gateway beside the planetary survey scope, and extended its metal mesh.

“No radio signals detected,” sensors reported.

“All right, bring both the arms back in,” Oscar said. “Astrogration, move the wormhole exit to geosynchronous height above the third planet’s daylight terminator.”

When the arms were back in their recesses, the starfield winked out. A moment later, the gateway opened again, revealing the crescent of a planet directly ahead. Its radiance washed across the confinement chamber and in through the windows. Oscar smiled in welcome as the soft light fell across his console. The cloud cover was above average, cloaking a good seventy percent of the hemisphere. But he could see the blue of oceans, and the grubby red-brown of land, even the crisp white of polar caps was visible in that first glimpse.

“All right, people, let’s concentrate on the job,” Oscar said as excited conversation buzzed through the loop. “We’ve all seen this before. Sensors, I want a full electromagnetic sweep. Launch seven geophysics satellites, get me some global coverage. Planetary Science, you’re on; preliminary survey results in three hours, please. Alien encounter office, start hunting. Emergency Defense, you’re on stand-by alert, and now have full wormhole shutdown authority; acknowledge that, please.”

“Acknowledged, sir.”

The launch rail telescoped out from its storage bay below the control center windows, extending a good ten meters through the wormhole exit. Satellites accelerated down the rail, riding the magnetic pulses before whirling away along different trajectories. Once they’d fallen a kilometer from the gateway, their ion drives came on, pushing them into high-inclination orbits that would provide coverage of the planet’s whole surface. As they went, each released a swarm of subsatellites like golden butterflies, expanding their observation baseline. Tracking dishes were deployed to keep in contact. The big dish came out again, scouring the continents for any electromagnetic activity. A two-meter telescope peered down inquisitively.

Oscar sat back and had his first in situ break of the day. A trolleybot slid along the console rows, distributing drinks and snacks. He claimed a cheese and smoked bacon sandwich and a couple of bottles of natural mineral water. As he ate, the screens above the windows came alive with images from the satellites. Details were gradually sketched in by the data tables and graphics in the console portals.

The planet had five major continents, accounting for thirty-two percent of the surface. Temperature was lower than strictly favorable, resulting in huge ice caps that between them covered a third of the planet. One and a half continents were completely buried beneath ice. That left a lot less usable land than average. The magnetic field was stronger than Earth’s, which gave it a very large Van Allen radiation belt.

“There is no evidence of sentient life at this time,” alien encounter said. “No large-scale structures, no electromagnetic activity, no visible cultivation, and no artificial thermal sources.”

“Thank you,” Oscar said. The last factor was the clincher for him. The ability to start and use fire was deemed the litmus test of sentience. If anything on the planet was capable of sentient thought, it was currently below Neanderthal-equivalent. “Sensors, you can switch to active scanning now.”

Radar sweeps started to penetrate the pervasive cloud. The images on the big screens began to develop a lot quicker, with detailed layers building on the provisional outlines. Lasers swept through the atmosphere, plotting its composition. The RI manipulated the energy flow through the gateway mechanism, manufacturing tiny gravity wave distortions at the wormhole exit. They rippled through the planet’s crust, allowing the satellites to determine its internal layout.

At fifteen hundred hours, Oscar called an intraloop conference with his station heads. So far, they agreed, the planet appeared to be hospitable. There was definitely no sign of an indigenous sentience. No animals above two meters in length had been spotted by the infrared sensors. Its geology was standard. Its biochemistry, as far as could be deduced from spectrography, was an ordinary carbon-based multicellular form.

“So, is it aggressive or passive?” Oscar asked. The problem was common enough. On a colder world such as this, most life would be slow-growing, a trait that inclined toward a more passive animal nature. Although there were cases where the opposite was true, and evolution had produced some very tough life-forms geared for survival at all costs. “Best guesses please.”

“The geology is stable,” planetary science said. “The current bio-epoch is probably about eighty million years old if we’re reading the stellar cycle right. We can’t detect any previous ice ages, so there’s been no sudden climate change to throw their evolution off-kilter. Everything growing down there is stable and adjusted. I’d say passive.”

“I have to agree,” xenobiology said. “We’re seeing small movable thermal spots indicative of animals, but nothing larger than a dog. Certainly nothing we normally associate with carnivorous predators. Botany is also reasonably standard, though there are few large plants, and what passes for trees are solitary, they don’t congregate in forests, which is unusual.”

“Very well.” Oscar swiveled his seat until he could see McClain Gilbert, the forward crew chief, sitting at the front of the observation gallery. “Mac, I’m giving you an initial encounter authorization. Get your first contact team suited up.”

“Thank you, sir.” McClain Gilbert gave him a thumbs-up from behind the glass.

Oscar switched back to the full loop. “We’re going for a ground encounter. Sensors, put the geophysics satellites to automatic, and withdraw all the arms. Astrogration, I want the exit moved to a five-hundred-kilometer equatorial altitude, then give it an orbital velocity. When we’re established, launch the low-orbit surveillance satellite fleet; I’ll need constant coverage of the ground contact site. We’re aiming for ground opening in one hour, people, get ready for that. Planetary Science, find me a suitable dawn site at that time.”

With the exit positioned five hundred kilometers above the ground, the clouds below seemed a lot brighter. The small squadron of low-orbit satellites shot off the launch rail, curving down to an even lower altitude and spreading out to form a chain around the planet’s equator. Images from their high-res cameras appeared on the screens, revealing a wealth of details. Stones a mere five centimeters across were visible amid the carpet of vermilion grass-equivalent. Squirrellike rodents, with gray scales rather than fur, bounded about, scuttling into burrows and swimming along streams. All the small independent trees had peculiar zigzag branches.

“Confirming low-orbit satellite fleet in position,” sensors reported. “We have full coverage.”

“Coming up to dawn on the landing site,” planetary science said.

“Withdraw sensor arms,” Oscar said. “Chamber Management, establish a force field across the gateway. Astrogration, reposition the exit one kilometer above designated contact site, horizontal axis.”

The wormhole blinked, and they were looking down on a gently crumpled landscape of thin burgundy grass and twisted carmine bushes. A low dawn light was casting long gloomy shadows across the ground. Pools of dense mist clung to hollows and depressions with oily tenacity.

“Chamber Management, equalize pressure. Sensors, deploy the atmospheric probe and exposure samples.”

The force field reconfigured itself to allow the sampler arm through. It didn’t find any immediately lethal particles missed by the scans from orbit.