 the year 1918 in science and technology involved some significant events, listed below. ==astronomy== * june 8 â nova aquila, the brightest observed since 1604, is discovered. * kiyotsugu hirayama identifies several groups of main belt asteroids, now known as hirayama families. * harlow shapley demonstrates that globular clusters are arranged in a spheroid or halo whose center is not the earth, but the center of the galaxy. * max wolf discovers the star wolf 359. * heber curtis discovers a relativistic jet of matter emerging from elliptical galaxy m87. ==biology== * february 21 â the last known carolina parakeet (the only parrot species native to the eastern united states) dies in cincinnati zoo. * r. a. fisher puts forward a genetic model that shows that continuous variation could be the result of mendelian inheritance in his paper "the correlation between relatives on the supposition of mendelian inheritance". * j. henri fabre's the sacred beetle, and others published in english. * jacques loeb's forced movements, tropisms, and animal conduct published in the united states. ==cryptography== * february 23 â arthur scherbius applies to patent the enigma machine. * edward hugh hebern patents the hebern rotor machine. ==history of science== * technisches museum wien opens in vienna. ==mathematics== * felix hausdorff introduces the concept of the fractional hausdorff dimension. * gaston julia describes the iteration of a rational function. ==medicine== * january â 1918 flu pandemic: "spanish 'flu" (influenza) first observed in haskell county, kansas. * march 26 â dr. marie stopes publishes her influential book married love in the u.k., following it with wise parenthood, a treatise on birth control. * juneâaugust â "spanish 'flu" becomes pandemic.{{cite web|url=http://www.pasteur.fr/infosci/conf/crc/grippe_crc.ppt|publisher=[[inst
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