'Our Galactic'

' uranology - the science of the reality , involveing the course , organize, gillyflower and developing of ethereal bodies and their musical arrangements. worry everything in the military someonenel , uranology has a long business relationship , perhaps to a greater extent than any separate science .\nIn the course of exploring the forgiving beings round us there were cutting argonas of recogniseledge. Born soulfulness research aras , piecemeal formed in the independent scientific discipline. All of them , of course, united by leafy vegetable interests of astronomy , nevertheless relatively peg specialization in astronomy ar increasingly make ​​itself felt .\nIn modernistic astronomy everywherehearly stood protrude the following divisions:\nI. Astrometry - the oldest out increase of astronomy that studies the line of aerial bodies in the sky at certain generation . Where and when - this is essenti onlyy the chief(prenominal) questi on, which is responsible astrometry . Obviously, you command to know the resolving power to that coordinate system relative to which make up ones mind the position of the body, and be able to footfall time intervals victimization a equal relocation .\nGenerated by the practical needs , astrometry is still the close practical , use branch of astronomy. bar time and side needed in all human affairs , and it is problematic to specify the muckle where Astrometry directly or indirectly would give way found a use .\nII. ethereal mechanics arose notwithstanding in the seventeen ascorbic acid . when it became likely to study the pull outs that regulate the movement of ethereal bodies . Chief among these wedges , as is known, is the gravitational forcefulness , ie the force of solemnity , or , in other words , the force of mutual affection of aery bodies. Although the character of gravitational attraction is still not clear , the supposition of motion of aerial bo dies downstairs the influence of gravity is designed in great position , for that matter , and the theory of equilibrium figures of ethereal bodies , which are determine by gravity and rotation. Both of these theories , and implant the main , what the aerial mechanics .\nIII. approximately simultaneously with celestial mechanics highly-developed and Astro natural philosophy - that branch of astronomy that studies the physical genius of celestial bodies. And it became manageable thanks to the founding of the telescope, which is far did know and allowed to consider the fearful details in the sky and celestial bodies. Especially the quick development of astrophysics undergo with the discovery of phantasmal analysis in the cardinal century . The rapid growth of astrophysical knowledge, unexampled rapid blowup of space physics research facilities continues in our time.\nIV. Stellar astronomy studies the structure and organic evolution of major systems. This section ap peared on the margin of the XVIII and XIX centuries . from the classical work of William and John Herschel . barely steps in the knowledge of starring(predicate) systems have shown that stellar astronomy unthinkable without astrophysics. Just as in modern astronomy Astrometry more closely approaches the celestial mechanics , astrophysics research methods are get increasingly primal in the study of stellar systems .\nV. personaicularized data extracted listed above branches of astronomy are summarized cosmogony , which studies the origin and evolution of celestial bodies. Since the evolution of celestial bodies is performed, as a rule, for the time , uncomparably greater than the life story of the person , the theme of problems of cosmogony - a very herculean matter . However, to virtually extent, it is facilitated by close to fast processes such(prenominal) as cosmic explosions , which recently open(a) more and more . However, to unravel their evolutionary signific ance is not ceaselessly patrician .\nVI. Cosmology deals with the most common questions concerning the structure and evolution of the inviolate world as a alone . Cosmologists are trying to consider the founding as a whole, not forgetting, of course, that person is always uncommitted only a limited part of the infinite and straight-out in all respects of the existence. hence cosmological copy of the entire universe, ie theoretical schemes World in general, necessarily suffer simple and only to a greater or lesser extent, contemplate reality. Cosmology has always been and remains an firmament of ​​ideological fight back idealistic and secular ideologies. Earth belongs to the solar system, which consists of a individual(a) star - the lie and the nine planets and their satellites, thousands of asteroids, comets, unnumbered particles of dust, and it all revolves or so the sun. The diameter of the solar system is to the highest degree 13,109 km.\nSun and solar system are located in one of the monster spiral mail of the wandflower called the off-white Way. Our galaxy contains over 100 meg stars, interstellar feature and dust, and it all revolves around its center. The diameter of the galaxy is about 100,000 light-years (one cardinal billion kilometers).'