Tantra was of the opinion that Heb Uhr was merely repeating the one-sided assertions of the ancient astronomers who had not understood the dynamics of planet development. Every planet lost the lighter substances that were carried away into space and dispersed. The loss of light elements was especially great in cases where there was great heat and great light pressure from the blue suns.
Tantra gave a long string of examples and concluded that the process of “increasing weight” on the planets of the blue stars did not permit the emergence of living forms.
Satellite 57 transmitted Tantra’s objections direct to the Council observatory.
At last the moment came that Ingrid Dietra and Kay Bear, like all other members of the expedition, had been awaiting so impatiently. Tnntra began to reduce her speed from her subphotonic velocity, had passed the ice belt of the solar system and was approaching the spaceship station on Triton. High velocity was no longer necessary: travelling at a speed of 900 million kilometres an hour, they would have reached Earth from Neptune’s satellite. Triton, in less than five hours. The acceleration of the spaceship, however, took so long that she would have overshot the Sun and travelled far away from it into space if she had set out from Triton.
In order to economize the precious anameson and save the ship from carrying unwieldy equipment, communications inside the solar system were effected by ion planet-ships. Their speed did not exceed 800,000 kilometres an hour for the inner planets and 2,500,000 kilometres an hour for the most distant outer planets. The usual trip from Neptune to Earth took two and a half to three months.
Triton was a very big satellite, only a little smaller than the huge third and fourth satellites of Jupiter, Ganymede and Callisto, or the planet Mercury. It therefore possessed a thin atmosphere consisting mainly of nitrogen and carbon monoxide.
Erg Noor lauded the spaceship at the appointed place at the satellite’s pole, far from the broad domes of the station buildings. On a ledge of the plateau, near a cliff that was honeycombed with underground premises, stood the gleaming glass building of the quarantine sanatorium.
Here the travellers were subjected to a five-week quarantine in complete isolation from all other people. In the course of this time skilled doctors would study their bodies to make sure that no new infection had taken root. The danger was too great to be ignored: every person who had landed on another planet, even on an uninhabited one, had to submit to this inspection no matter how long he had afterwards been confined to the spaceship. The interior of the ship itself was also inspected by the sanatorium’s scientists before the station gave permission for the journey to Earth. Those planets that had been studied long before and had been colonized by man, such as Venus and Mars, as well as some of the asteroids, had their own quarantine stations where travellers were examined before the ships left.
Confinement in the sanatorium was easier than in the spaceship. There were laboratories in which to work, concert halls, combined baths using electric currents, music, water and wave oscillations, daily walks in light protective suits in the hills near the sanatorium, and, lastly, there was contact with Earth, not always regular, but, still, Earth was only five hours away!
Nisa’s silicolloid sarcophagus was carried into the sanatorium with every possible precaution. Erg Noor and the biologist Eon Thai were the last to leave Tantra. They moved easily even though wearing weights to prevent their making sudden leaps in the low gravitation on the satellite.
The floodlights around the landing fieldwere extinguished. Triton was moving across Neptune’s daylight side. Dull as the greyish light reflected by Neptune was, the giant mirror of the planet, only 35,000 kilometres away from Triton, dispelled the gloom and gave the satellite a bright twilight like that of a spring evening in the northern latitudes of Earth. Triton revolved about Neptune in the opposite direction to the planet’s revolution, that is, from east to west, once in about six terrestrial days so that the “daytime” twilight lasted about seventy hours. In that time Neptune revolved about its Own axis four times and at the moment of their arrival the shadow of the satellite was noticeable as it crossed the nebulous disc.
Almost simultaneously the commander and the biologist noticed a small ship standing near the edge of the plateau. This was not a spaceship with its stern half broader than the bows and with high stabilizer ribs. Judging by the sharp bows and slim hull it must have been a planetship hut its contours differed in the thick ring at the stern and the long, distaff-shaped structure on top.
“There’s another ship here in quarantine?” half asked, half asserted Eon. “Can the Council have changed its rules?”
“Not to send out stellar expeditions before a previous one has returned?” asked Erg Noor in his turn. “We have kept to our schedule but the report we should have sent to Earth from Zirda was two years late.”
“Perhaps it is an expedition to Neptune,” suggested the biologist. They soon covered the two kilometres to the sanatorium and climbed up to a wide terrace faced with red basalt. The tiny disc of the Sun, easily visible from the pole of the non-rotating satellite, shone brighter than any other star in the black sky. The bitter frost, — 170 °C., felt like the ordinary cold of a northern winter on Earth through their heated protective suits. Huge flakes of snow, frozen ammonia or carbon monoxide, fell slowly through the still atmosphere, giving their surroundings the serene appearance of Earth during a snow-fall.
Erg Noor and Eon Thai stared hypnotized at the falling snow-flakes as did their distant ancestors in the northern lands for whom the first snow-fall meant the end of the farm year. And this unusual snow also meant the end of their journey and their labours.
The biologist, in response to a subconscious impulse, held out his hand to the commander.
“Our adventures are over and we are still alive and well — thanks to you!”
Erg Noor made an abrupt gesture repelling his hand. “Are we all well? And thanks to whom am I alive?” Eon Thai was not put out.
“I’m sure Nisa will be saved! The doctors here want to begin treatment immediately. Instructions have been received from Grimm Schar himself, you know, the head of the General Paralysis Laboratory.”
“Do they know what it is?”
“Not yet. But Nisa has obviously been struck by some sort of current that condenses in the nerve nodes of the autonomous systems. When we find out how to put a stop to its extraordinarily long action the girl will be cured. We have discovered the functioning of persistent psychic paralysis that was considered incurable for centuries, haven’t we? This is something similar caused by an outside exciter. We’ll carry out some experiments on my prisoners, whether they are dead or alive, then… my arm will also begin to function again!”
The commander felt ashamed and frowned; in his great sorrow he had forgotten how much the biologist had done for him. Not at all decent in a grown man! He took the biologist’s hand and they expressed their warm friendship in man’s age-old handshake.
“Do you think the lethal organs of the black jelly-fish and that — that cross-shaped abomination are of the same order?” asked Erg Noor.
“I don’t doubt it, my arm tells me that. Adaptation to life in these black creatures, inhabitants of a planet rich in electricity, has taken the form of the accumulation and transformation of electric energy. They are obviously beasts of prey but we still don’t know whom they prey on.”
“But do you remember what happened to us all when Nisa….”