Harry Harrison

“ For a hyperspace jump, you need at least four beacons for an accurate fix. For long jumps, navigators use as many as seven or eight. So every beacon is important and every one has to keep operating. That is where I and the other trouble-shooters came in.
We travel in well-stocked ships that carry a little bit of everything; only one man to a ship because that is all it takes to operate the overly efficient repair machinery. Due to the very nature of our job, we spend most of our time just rocketing through normal space. After all, when a beacon breaks down, how do you find it? ”

“ The radioactivity in the water didn’t hurt the natives. It caused mutations that bred true.
A city was built around the temple and, through the centuries, the pyramid was put up around the beacon. A special branch of the priesthood served the temple. All went well until one of the priests violated the temple and destroyed the holy waters. There had been revolt, strife, murder and destruction since then. But still the holy waters would not flow. Now armed mobs fought around the temple each day and a new band of priests guarded the sacred fount. ”

“ This was the earliest type of beacon ever built—by Earth, no less. Considering its location on one of the Proxima Centauri planets, it might very well be the first beacon.”
I looked at the blueprints he handed me and felt my eyes glaze with horror. “It’s a monstrosity! It looks more like a distillery than a beacon—must be at least a few hundred meters high. I’m a repairman, not an archeologist. This pile of junk is over 2000 years old. ”

“ The first ships to enter hyperspace had no place to go—and no way to even tell if they had moved. The beacons solved that problem and opened the entire universe. They are built on planets and generate tremendous amounts of power. This power is turned into radiation that is punched through into hyperspace. Every beacon has a code signal as part of its radiation and represents a measurable point in hyperspace. Triangulation and quadrature of the beacons works for navigation—only it follows its own rules. The rules are complex and variable, but they are still rules that a navigator can follow. ”

“ I drew up my scaly figure in a noble gesture and pointed toward the ceiling. “I come from your ancestors to help you. I am here to restore the Holy Waters.”
This raised a buzz of conversation behind me, but got no rise out of the chief. He sank slowly into the water until only his eyes were showing. I could almost hear the wheels turning behind that moss-covered forehead. Then he lunged up and pointed a dripping finger at me.
“You are a liar! ”

“ I would much rather take a chance of breaking through near some star than spend time just barreling through normal space, but apparently Tech knows this, too. They had a safety factor built into the computer so you couldn’t end up inside a star no matter how hard you tried. ”

“ It wasn’t going to be ended by just reversing the water-valve switch. This valve was supposed to be used only for repairs, after the pile was damped. When the water was cut off with the pile in operation, it had started to overheat and the automatic safeties had dumped the charge down the pit.
I could start the water again easily enough, but there was no fuel left in the reactor.
I wasn’t going to play with the fuel problem at all. It would be far easier to install a new power plant. ”

“ Three priests were groping toward me, their eye-sockets red pits of burned flesh. They knew what I wanted and led the way without a word.
A crumbling and cracked stone stairway brought us up to a solid metal doorway labeled in archaic script MARK III BEACON—AUTHORIZED PERSONNEL ONLY. The trusting builders counted on the sign to do the whole job, for there wasn’t a trace of a lock on the door. One lizard merely turned the handle and we were inside the beacon. ”