outer enrichment region
71Messier 87 — Virgo A The Messier 87 galaxy. Observation data Epoch J2000 Constellation Virgo Right ascension …
72Down syndrome — Classification and external resources Boy with Down syndrome assembling a …
73Interstellar medium — Interstellar redirects here. For other uses, see Interstellar (disambiguation). The distribution of ionized hydrogen (known by astronomers as H II from old spectroscopic terminology) in the parts of the Galactic interstellar medium visible… …
74rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
75Music of Hungary — Music of Hungary: Topics verbunkos táncház csárdás nóta History: (Samples) Genres Classical Folk Hardcor …
76Arabic literature — (Arabic: الأدب العربي Al Adab Al Arabi ) is the writing produced, both prose and poetry, by speakers (not necessarily native speakers) of the Arabic language. It does not usually include works written using the Arabic alphabet but not in the… …
77Greenville, North Carolina — City of Greenville   City   City hall on the left and Jarvis Memorial United Methodist Church on the right in Uptown …
78North Carolina Zoo — Zoo logo Zoo entrance Date opened August 13, 1976 (Official) …
79architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …
80Ozone — For other uses, see Ozone (disambiguation). Ozone …
