Cosma Home > Communication > Knowledge > Realm > Physical > Universe > Galaxy

Spotlight

Star survey produces stunningly detailed image of Milky Way (Thomas H. Maugh II, LA Times)
Zoomable Image (European Southern Observatory)

Subjects
Physical Universe (Mass, Force)
Galaxy, Star, Solar System, Planet, Moon, Asteroid, Comet
Mercury, Venus, Earth (Moon), Mars (3D), Jupiter, Saturn, Uranus, Neptune, Pluto

Resources

These are organized by a classification scheme developed exclusively for Cosma. More…

General

Dictionary

galaxy : any of the very large groups of stars and associated matter that are found throughout the universe — Webster

Oxford, OneLook, Free Dictionary, Wiktionary, InfoPlease, Word Reference, Urban Dictionary

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

Encyclopedia

Galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. Galaxies contain varying amounts of star systems, star clusters and types of interstellar clouds. In between these objects is a sparse interstellar medium of gas, dust, and cosmic rays. Dark matter appears to account for around 90% of the mass of most galaxies. — Wikipedia

David Darling’s Internet Encyclopedia of Science, Britannica, Columbia (Infoplease)