Lieutenant Colonel Olga Tovyevski, youngest woman of her rank in the Soviet space effort, was en route to Mars, solo, in a modified Alyut 6. The modifications allowed her to carry the prototype of a new airscrubber that was to be tested in the USSR's four-man Martian orbital lab. They could just as easily have handled the Alyut by remote, from Tsiolkovsky, but Olga wanted to log mission time. They made sure she kept busy, though; they stuck her with a series of routine hydrogen-band radio-flare experiments, the tail end of a lowpriority Soviet-Australian scientific exchange. Olga knew that her role in the experiments could have been handled by a standard household timer. But she was a diligent officer; she'd press the buttons at precisely the correct intervals.

With her brown hair drawn back and caught in a net, she must have looked like some idealized Pravda cameo of the Worker in Space, easily the most photogenic cosmonaut of either gender. She checked the Alyut's chronometer again and poised her hand above the buttons that would trigger the first of her flares. Colonel Tovyevski had no way of knowing that she was nearing the point in space that would eventually be known as the Highway.

As she punched the six-button triggering sequence, the Alyut crossed those final kilometers and emitted the flare, a sustained burst of radio energy at 1420 megahertz, broadcast frequency of the hydrogen atom. Tsiolkovsky's radio telescope was tracking, relaying the signal to geosynchronous comsats that bounced it down to stations in the southern Urals and New South Wales. For 3.8 seconds the Alyut's radio-image was obscured by the afterimage of the flare.