Poole remembered the speck of light he’d seen drifting close to the Xeelee. ‘Hit it with what?’
‘Cruithne,’ Harry said grimly. ‘You heard of that? Earth-crossing asteroid, co-orbiting with Earth. Our second moon, some called it. Stealthed as best we could, arrays of GUTdrives fixed to its surface. We’ve had it sailing out this way for months; it should have looked like it was going to miss the Xeelee by a comfortable margin. But at the last minute, a big deflection from the GUTdrives – wham. We hit that bandit with sixty billion tonnes of rock and ice, moving at interplanetary speeds, out of the blue.’
-Xeelee: Vengeance, Ch. 57