Word: weightlessness
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...will be kept in a bath of liquid helium at a temperature of-452°F. to make the niobium coating superconducting. In this supercooled state it will shield the gyroscope from the effects of any external magnetic field. Once in orbit, the free-spinning gyroscope will also be weightless and almost completely free of gravitational pull...
...tricky second stage, a single 225,000-lb.-thrust engine powered by an exotic combination of liquid oxygen (lox) and liquid hydrogen (LH2). While lox boils off at a difficult -290° F., LH2 boils at -423° F., thus requires extreme pressurization to keep cool. Moreover, in weightless space, LH2, like mercury, tends to gather into a ball or spin off into tiny globs; simply to feed the fuel from tank to engines, the second stage was equipped with three fast-burning rockets that exerted enough G force to start the LH2, flowing. All went smoothly, and after...
Though Gemini 7 was primarily an orbiting medical laboratory designed to test the reactions of Astronauts Frank Borman and James Lovell to two weightless weeks in space, the spaceship also turned out to be a superb camera platform. While Borman and Lovell were undergoing complete medical examinations at Cape Kennedy last week, NASA released more of the spectacular pictures the two had taken of the world below them, and of nearby Gemini 6 during rendezvous-a rendezvous, one official noted in passing, that brought the capsules within a foot of each other during their close-formation flying...
...Modern Art, it was Old Line Surrealist René Magritte's turn, and the exhibition of 82 paintings proved that the Belgian-born artist has lost none of his wizardry. Loaves of bread fly in formation beyond a stone embrasure in The Golden Legend; an immense rock floats weightless in The Glass Key; in Blank Signature, a fine lady upon a chestnut horse rides mysteriously through an enchanted forest, passing before and beyond a landscape painted magically as if on a vertical Venetian blind...
Early in the flight they complained that their sleep was being interrupted by the noise of a motor that automatically tightened cuffs around Lovell's thighs for two out of every six minutes-part of an experiment designed to keep the heart from getting lazy in a weightless environment. Houston promptly agreed to turn the motor off during the ten-hour sleeping period...