Word: spiraled
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...Because he has blazed new trails in Astrophysics. From his early adaptation of the 'period-luminosity relation' to variable stars in globular clusters, came a new and enlarged conception of the universe; from his studies of the Magellanic Clouds, new values of stellar brilliancy; from the Spiral Nebulae, new vistas of galaxies and super-galaxies, and interesting theories of cosmogony...
...high voltages which have been thought necessary in producing high speed sub-atomic projectiles. Protons (hydrogen atoms stripped of their electrons) are sent back and forth between two semicircular hollow plates by means of alternating currents of 10,000 volts and a magnetic field. As they continue in a spiral motion they gather speed, finally shoot out the end of the tube, minute bullets capable of battering the nucleus of any atom in their path, perhaps of changing it into atomic energy which scientists have long talked about. Cosmic Rays. Although some scientists have thought that the "cosmic rays" which...
...From the Greek: "helico" meaning spiral; "pteron" meaning wing...
Professor Lundmark in his paper told of his exploration among the spiral nebulae which are at a distance of 500,000 to 150,000,000 light years from the earth. Although these nepulae are smaller in themselves by much than our own galactic system, nevertheless they seem to come in groups of thousands or so, and Lundmark has advanced the important theory that each group of these comprises a separate system such as ours...
Both these papers, Shapley's and Lundmark's, are of vast importance in a reorganization of our idea of the extent of space, fixing a limit of which is as yet beyond human comprehension, according to Lundmark, who reports that the spiral nebulae which he has been examining are by no means the farthest objects from earth in the universe...