Extragalactic Astronomy: Astronomy, Milky Way, Galactic Astronomy, Local Group, Groups and Clusters of Galaxies, Quasar - Couverture souple

 
9786131439315: Extragalactic Astronomy: Astronomy, Milky Way, Galactic Astronomy, Local Group, Groups and Clusters of Galaxies, Quasar

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Extragalactic astronomy is the branch of astronomy concerned with objects outside our own Milky Way Galaxy. In other words, it is the study of all astronomical objects which are not covered by galactic astronomy. As instrumentation has improved, more distant objects can now be examined in detail. It is therefore useful to sub-divide this branch into Near-Extragalactic Astronomy and Far-Extragalactic Astronomy. The former deals with objects such as the galaxies of our Local Group, which are close enough to allow very detailed analyses of their contents (e.g. supernova remnants, stellar associations). The latter describes the study of objects sufficiently far away that only the brightest phenomena are observable

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