The drone was standard spacecraft size, an unmanned hull laden with the necessities of life that would support him for a year.
It was the first one that he had ever seen. This was the first time that Junior Spaceman Howard Reed had had to face the problem of Supply. Packed in that droneship was enough earth environment to last a man a year. The perishables and expendables, as well as replacement for the lost fractions of the recyclables, were all there. They were dehydrated and deep frozen after all waste had been removed, then compressed into cubes of identical size for the most favorable packing fraction. Even so, it was a prodigious amount of stuff. Supply would have been impossible on a once-per-year basis, if the foul water of Flatbush, Lalande 25372, hadn't been distillable with ease.
The junior spaceman eyed the droneship with a sudden burst of pride in his fellow man's accomplishment. Given a pre-programmed flight along telemetered beacons originating at either terminus, the running equipment within the drone would bulk much less than the same mass and size as a human and his needs. Until flight-decisions were necessary, the hardware pilot was as good as the human pilot—and far less subject to headache, tantrum, disappointment at not getting the Saturday night pass and resentment over being passed by at promotion time.
Then his pride gave way to sudden, prolonged thought.
The range of a spacecraft is computed from point of takeoff to point of no return. There was no way of restoring the powerbanks of a spacecraft except on Earth, Sol.
Now, of course, it is entirely possible to take off and just keep going until the powerbanks are depleted.
That will cover twice the stated range to the point of no return. Ships have gone out and off and away and have never been heard of again. It is possible that one or more of these have succeeded in locating an Earth-like planet beyond the point of no return, but the Earthmen at home will never know about it until the range is extended. The possibility of such a planet favoring human life and ultimately harboring a culture of technical competence enough to create and maintain the power restoring equipment is extremely remote.
For spacecraft that carry women are few and far between.
And it takes more than one man's lifetime to make use of the know-how.