The IAC continued to watch the object. As it approached, the great orbiting telescopes gradually made out more details of its composition and structure. Numerous cavity radiators became apparent in the gamma-ray images. Anomalies in its trajectory as it passed the outer gas giants caused the watchers to ponder its density. Shortly before X3J11 passed the orbit of Jupiter, the watchers could tell that the interstellar wanderer was honeycombed.
The United Nations' combined forces had pushed Spoonerite resistance back to upper Yukon. The Spoonerites dug in for a last stand above the Arctic Circle, and the States massed their forces for the blow that would put an end to Spoonerism on Earth.
Supreme Commander Ewan MacDonnell planned for a three-pronged strike, two land forces and an enormous amphibious group. There were ample forces available, though the supply lines were a chore to maintain, especially in view of the underenthused participation of the Russians. His staff labored for three months, calculating the affair to a nicety, allowing for an overkill factor of three and permitting no conceivable routes of egress from the killing zone. The two hundred ten thousand Spoonerites in MacDonnell's sights would have nowhere to run.
The word went out quietly to all commanders, down to the battalion level: Spoonerite surrenders should not be deemed trustworthy. The taking of prisoners was strongly discouraged.
X3J11 approached perigee. The watchers of the IAC were electrified by what they saw. The spectra from the planetoid's cavity radiators indicated an immense core of nuclear fuels. Millions of tons of something dearer than pitchblende or carnotite resided at the center of the worldlet.
IAC petitioned the States again, and belatedly received their respectful attention. Funds flowed into the watch group. Government representatives and advisors were attached to the effort. Spacecraft that had gone unused for more than a century were pulled out of mothballs, and a frenzied effort to recommission them began.
MacDonnell's meticulously planned triple assault began exactly on schedule. For a full day's advance, it encountered no resistance at all. For the first few miles, he and his troops assumed that the Spoonerites had run out of fuel, or ammunition, or hope. When the advance guard first came upon abandoned Spoonerite emplacements, well stocked with shot and fuel, they began to wonder.