So the Herr Professor did the only thing remaining for him to do, and began to search, with the telescope, in widening circles. It was two hours before he found it, five degrees off course already and veering more and more into a—Well, there was only one thing you could call it. A tailspin.

The darned thing was going in circles, circles which appeared to constitute an orbit about something that couldn’t possibly be there. Then narrowing into a concentric spiral.

Then—out. Gone. Darkness. No rocket flares.

The Professor’s face was pale as he turned to Minnie.

“It iss imbossible, Minnie. Mein own eyes, but it could not be. Even if vun side stopped viring, it could not haff gone into such sudden circles.” His pencil verified a suspicion. “Und, Minnie, it decelerated vaster than bossible. Even mitt no tubes viring, its momentum vould haff been more—”

The rest of the night—telescope and calculus—yielded no clue. That is, no believable clue. Some force not inherent in the rocket itself, and not accountable by gravitation—even of a hypothetical body—had acted.

“Mein poor Mitkey.”

The gray, inscrutable dawn. “Mein Minnie, it vill haff to be a secret. Ve dare not publish vhat ve saw, for it vould not be believed. I am not sure I believe it myself, Minnie. Berhaps because I vas offertired vrom not sleeping, I chust imachined that I saw—”

Later. “But, Minnie, ve shall hope. Vun hundred vifty thousand miles out, it vas. It vill fall back upon der earth. But I gannot tell vhere! I thought that if it did, I vould be able to galculate its course, und—But after those goncentric circles—Minnie, not even Einstein could galculate vhere it vill land. Not effen me. All ve can do iss hope that ve shall hear of vhere it falls.”

Cloudy day. Black night jealous of its mysteries.