Word: spacecrafts
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...belt has unknown perils too. Bright flares breaking out of the sun occasionally fill it with X rays, ultraviolet and erratically curving streams of high-energy particles. No one knows how to forecast these tempests in space, or how to keep them from killing unshielded spacemen. If manned lunar spacecraft must be protected by heavy shielding, the rockets that launch them will have to be made bigger, and this will cause change and long delay all down the line...
...moon may be dust or solid rock, or something in between, like popcorn. It may be smooth or jagged all over. It may be radioactive or covered with highly reactive chemicals. It may have properties that do not exist on earth and that earthlings cannot imagine. A two-man spacecraft to land on this unknown surface is being built by Grumman Aircraft Engineering Corp., but if it had to be redesigned at the last moment, it could shatter the whole schedule...
Kennedy's proposal for a joint moon expedition was known in advance only to a handful of intimates in the White House, the National Aeronautics and Space Administration, and the State Department. Only a few days earlier, discussing joint manned flights, Manned Spacecraft Center Director Dr. Robert Gilruth told the American Rocket Club: "I tremble at the thought of the integration problem. The proposal would be very interesting and significant - but hard to do in a practical sort...
...reasons that if the enzyme shows up in the dust of Mars, its presence must mean that microscopic living organisms exist-or have recently existed-on the distant planet just as they do on earth. The actual identification of these creatures will have to wait for larger, more elaborate spacecraft. But in the meantime, to ensure that Mars is not contaminated by earthly microbes carried there aboard the multivator, Lederberg is working on a technique for sterilizing his life detector...
Vibration is usually a dirty word in the space age lexicon. The delicate instruments of missiles, aircraft and spacecraft function best in a smooth environment, and scientists are continually searching for means to eliminate the least little bump. But deliberate vibration has its uses too, and last week, in widely separated laboratories, engineers were putting man-made jiggles to work. Applications...