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51List of chess openings — This is a list of chess openings, organized by the Encyclopaedia of Chess Openings (ECO) code. In 1966, Chess Informant categorized the chess openings into five broad areas ( A through E ), with each of those broken down into one hundred… …
52Helix Nebula — For the different but similarly named nebula, see Double Helix Nebula. Eye of God redirects here. For other uses, see Eye of God (disambiguation). Helix Nebula Infrared image of the Helix Nebula, taken by the Spitzer space telescope, 2007 …
53Coalsack Nebula — The Coalsack Nebula Observation data (Epoch J2000.0) Type Dark …
54Rosette Nebula — The Rosette Nebula (H Alpha) Observation data: J2000.0 epoch Type Emission …
55Cat's Eye Nebula — Composite image using optical images from the HST and X ray data from the Chandra X ray Observatory Observation data …
56Johann Christian Bach — [ Thomas Gainsborough, 1776 (Museo Civico, Bologna)] Johann Christian Bach (September 5, 1735 ndash; January 1, 1782) was a composer of the Classical era, the eleventh and youngest son of Johann Sebastian Bach. He is sometimes referred to as the… …
57Pittsburgh International Airport — Infobox Airport name = Pittsburgh International Airport IATA = PIT ICAO = KPIT FAA = PIT type = Public / Military operator = Allegheny County Airport Authority city served = location = Findlay Township, Pennsylvania elevation f = 1,204 elevation… …
58Port Columbus International Airport — Coordinates: 39°59′53″N 082°53′31″W / 39.99806°N 82.89194°W / 39.99806; 82.89194 …
59Tarantula Nebula — The Tarantula Nebula, first light image of the TRAPPIST national telescope at La Silla Observatory Observation data: J2000 epoch Type …
60North America Nebula — This image layout reveals how the appearance of the North America nebula can change dramatically using different combinations of visible and infrared observations. Observation data: J2000.0 epoc …
