OOC: A thought occurs - for a pure biotech race, wouldn't CHON more or less take the place of money for constructions like, say, a space elevator?
Also, to account for the time it would take for the new probe to reach the heliopause under STL propulsion, retconning profile to clarify that the old probe was launched a century prior to the launch of this one, not a century prior to this probe reaching the heliopause.
Note: For my own convenience, I am using Earth-based temporal units in my calculations. When I need to do math, a year is 365.25 days composed of 24 hours composed of 3,600 seconds, and that's all there is to it.
IC(Deep Space, Outside of System 8): In a century, the ancient, pockmarked probe now cruising through interstellar space at over sixty thousand kilometers per hour had traveled over three hundred and sixty astronomical units - less than a hundredth of a light year, but nonetheless a monumental achievement for an artificial probe. It had, by the standards of a spacer, narrowly dodged solar flares, been battered by micrometeoroids, and still it had remained functional, and was, even now, beaming images of the universe back home.
The ancient probe had taken more than a century to travel three hundred and sixty astronomical units.
Its successor, riding on a white-hot jet of fusion exhaust, had crossed the first hundred in a quarter of a century.
The rest of the distance had been crossed in less than a day, thanks to the near-miraculous hyperdrive.
Some careful maneuvering and firing of the forward thrusters to moderate velocity, and the Cylell-1 was keeping pace bare kilometers from its ancestor, the two probes floating through space on parallel courses, one using every sensor it possessed to send a clear picture back to nostalgic scientists, the other, amusingly, flagging its descendant as an anomalous reading.
Once the historic pictures were beamed back, the Cylell-1 carefully maneuvered away from the ancient probe, leaving it to drift onward and outward forever while its successor continued its mission, and plotted a course for the nearest star.
OOC: The data for the speed of the older probe was based on the speed of the Voyager probes.