‘Do you think you get the principle?’ Julian asked sympathetically.
Rocky waved a white flag.
‘Then that’s all sorted out. Practically every point on the equator is suitable for the space elevator, but there are a few things you have to take into account. The anchor station, the ground floor, so to speak, should be in an area that is free of storms, strong winds and electrical discharges, with no air traffic and a generally clear sky. Most such places are found in the Pacific. One of them lies 550 kilometres to the west of Ecuador, and is the place where we are right now – the Isla de las Estrellas!’
Suddenly Julian was standing on the viewing terrace of the Stellar Island Hotel. Far outside the floating platform could be seen, and the two cables stretching from the inside of the Earth station into the endless blue.
‘As you can see, we have built not one, but two lifts. Two cables stretch in parallel into orbit. But even a few years ago it seemed doubtful whether we would ever experience this sight. Without the research work of Orley Enterprises the solution would probably have had to wait for several more years, and all this’ – Julian spread his arms out – ‘would not exist.’
The illusion vanished; Julian floated in Bible-blackness.
‘The problem was to find a material from which a cable 35,786 kilometres long could be manufactured. It had to be ultra-light and at the same time ultra-stable. Steel was out of the question. Even the highest quality steel cable would break under its own weight alone after only thirty or forty kilometres. Some people came up with the idea of spiders’ silk, given that it’s four times more resilient than steel, but even that wouldn’t have given the cable the requisite tensile strength, let alone the fact that for 35,786 kilometres of cable you’d need one hell of a lot of spiders. Frustrating! The anchor station, the space station, the cabins, all of that seemed manageable. But the concept seemed to founder on the cable – until the start of the millennium, when a revolutionary new material was discovered: carbon nanotubes.’
A gleaming, three-dimensional grid structure began to rotate in the black. Its tubal form vaguely resembled the kind of bow net that people use for fishing.
‘This object is actually ten thousand times thinner than a human hair. A tiny tube, constructed from carbon atoms in a honeycomb arrangement. The smallest of these tubes has a diameter of less than one nanometre. Its density is one-sixth that of steel, which makes it very light, but at the same time it has a tensile strength of about 45 gigapascals, whereas at 2 gigapascals steel crumbles like a cookie. Over the years ways were found to bundle the tubes together and spin them into threads. In 2004 researchers in Cambridge produced a thread 100 metres long. But it seemed doubtful whether such threads could be woven into larger structures, particularly since experiments showed that the tensile strength of the thread declined dramatically in comparison with individual tubes. A kind of weaving flaw was introduced by missing carbon atoms, and besides, carbon is subject to oxidation. It erodes, so the threads needed to be coated.’
Julian paused.
‘For many years Orley Enterprises invested in research into the question of how this flaw could be remedied. Not only were we able to replace the missing atoms, we also managed to enhance the tensile strength of the cables to 65 gigapascals through cross-connections! We found ways to layer them and protect them against meteorites, space junk, natural oscillations and the destructive effect of atomic oxygen. They are just one metre wide but flatter than a human hair, which is why they seem to disappear when you see them from the side. At a distance of 140,000 kilometres from Earth, where they end, we have connected them to a small asteroid, which acts as a counterweight. In future we want to accelerate spaceships along that stretch of ribbon in such a way that they could fly to Mars, or beyond, without any notable outlay of energy.’ He smiled. ‘In geostationary orbit, however, we have built a space station unlike anything that has ever existed before: the OSS, the Orley Space Station, accessible within three hours by space elevator: research station, space station and port! All manned and unmanned transfer flights to the Moon start from there. In turn, compressed helium-3 from the mining sites comes to OSS, is loaded onto the space elevator and sent to Earth, so that the prospect of ten billion people being provided with unlimited supplies of clean and affordable energy is becoming more and more of a reality every day. We can now say that helium-3 has supplanted the age of fossil fuels, because the necessary fusion reactors required have also been developed to market maturity by Orley Enterprises. The significance of oil and gas has dramatically declined. The plundering of our home planet is coming to an end. Oil wars will be a thing of the past. None of this would have been possible without the development of the space elevator, but we have taken to its conclusion the dream that Konstantin Tsiolkovsky dreamed – and made it reality!’
A moment later everything was back – the viewing terrace, the slope of the Isla de las Estrellas, the floating platform in the sea. Julian Orley, with waving ponytail and sparkling eyes, stretched his arms to the sky as if to receive the eleventh Commandment.
‘Twenty years ago, when Orley Enterprises began thinking about the construction of space elevators, I promised the world that I would build it an elevator into the future. Into a future that our parents and grandparents would never have dared to dream of. The best future we have ever had. And we have built it! In a few days you will travel on it to the OSS. You will see the Earth as a whole, our unique and wonderful home – and you will be amazed as you turn your gaze to the stars, to our home of tomorrow.’
To dramatic background music, on columns of red light, two shimmering cabins rose from the cylindrical station building on the sea platform and shot up into the sky. Julian threw back his head and gazed after them.
‘Welcome,’ he said, ‘to the future.’
Anchorage, Alaska, USA
Not again, thought Gerald Palstein. Not the same accusation, the same question, for the fourth time.
‘Perhaps it would have been cleverer, Mr Palstein, to keep on the people you are now throwing out of their workplaces and keep them otherwise engaged instead of digging up the last intact ecosystems on Earth in an obsessive quest for oil. Wasn’t it a grave mistake by your department to install the facility in the first place, as if energy sources like helium-3 and solar power were an irrelevance?’
Suspicion, incomprehension, malice. The press conference that EMCO was holding to bury the Alaska project had assumed the character of a tribunal, with him as whipping boy. Palstein tried not to let his exhaustion show.
‘From the perspective of the time, we acted completely responsibly,’ he said. ‘In 2015, helium-3 was a crazy dream. The United States of America couldn’t base their energy policy purely on the off-chance of a technological stroke of genius—’
‘In which you now want to participate,’ the journalist interrupted. ‘A bit late, don’t you think?’
‘Of course, but perhaps I could refer you to a few things I thought were familiar to both of us. On the one hand I wasn’t yet presiding over the strategy sector of EMCO in 2015—’
‘But you were its deputy manager.’
‘The final decision for what was to be built was my predecessor’s responsibility. But you’re right. I supported the Alaska project because there was no way of telling whether either the space elevator or fusion technology would work as predicted. So the project was clearly in the interest of the American nation.’
‘Or in the interest of a few profiteers.’