25/2/2016 ENGLISH PAGE Mixed Prepositions 16 englishpage.com Home > Prepositions and Phrasal Verbs > Mixed Prepositions 16 Mixed Prepositions 16 MultipleChoice f t g+ p Complete the text below by choosing the correct prepositions, then press "Check" to check your answers. A galaxy is a massive, gravitationally bound system that consists stars, an interstellar medium of gas and dust, and dark matter. Typical galaxies range dwarfs with as few as ten million stars up stars, all orbiting a common center giants with one trillion gravity. Galaxies can also contain a large number of multiple star systems and star clusters as well as various types of interstellar clouds. Historically, galaxies have been categorized according their apparent shape. Interactions between nearby galaxies, which may ultimately result a galaxy merger, may induce episodes of significantly increased star formation, producing what is called a starburst galaxy. There are probably more than a hundred billion galaxies a thousand separated the observable universe. Most galaxies are a hundred thousand parsecs one another by distances diameter and are usually the order of millions of parsecs. Intergalactic space, the space between galaxies, is filled tenuous gas with an average density less than one atom a cubic meter There is some evidence that supermassive black holes may exist at the center of many, if not all, galaxies. These massive objects are believed to be the primary cause of active galactic nuclei found Way galaxy appears to harbor http://www.englishpage.com/prepositions/mixed_prepositions_16.htm the core of some galaxies. The Milky least one such object within its nucleus. 1/2 25/2/2016 ENGLISH PAGE Mixed Prepositions 16 Source: http://en.wikipedia.org/wiki/Galaxy Check Copyright © 2016 Englishpage.com, All Rights Reserved Contact us | Privacy Policy | Advertise with us Your personal online English school. Learn English at Englishpage.com! Weekly Lesson Grammar Book Vocabulary Verb Tenses Conditionals Modals Gerunds / Infinitives Articles Prepositions Minitutorials Irregular Verbs Reading Room Listening Lounge Games English Forums English Schools English · Foreign Dictionaries English ·English Dictionaries Irregular Verb Dictionary Phrasal Verb Dictionary Verb + Preposition Dictionary http://www.englishpage.com/prepositions/mixed_prepositions_16.htm 2/2