Coalsack Nebula

Dark nebula	Lists of nebulae
The Coalsack Nebula. Dark Nebula Dark Nebula (Dark Zero in the original Japanese version) is a fictional character in the Kirby series of video games for Nintendo. ... The dark Coal Sack Nebula. ...
Observation data (Epoch J2000.0)
Type	Dark
Right ascension	12h 50m
Declination	−62° 30′
Distance	600 ly
Apparent magnitude (V)	–
Apparent dimensions (V)	7 × 5 °
Constellation	Crux
Physical characteristics
Radius	30–35 ly
Absolute magnitude (V)	–
Notable features	–
Other designations	–
	edit

The Coalsack Dark Nebula (or simply the Coalsack) is the most prominent dark nebula in the skies, easily visible to the naked eye as a dark patch silhouetted against the southern Milky Way. It was known pre-historically in the Southern Hemisphere and was observed by Vincente Yanez Pinzon in 1499. The Coalsack is located at a distance of approximately 600 light years away from Earth, in the Crux constellation. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one year. ... The apparent magnitude (m) of a star, planet or other celestial body is a measure of its apparent brightness as seen by an observer on Earth. ... This article describes the unit of angle. ... This article is about the star grouping. ... CRUX is a lightweight, i686-optimized Linux distribution targeted at experienced Linux users. ... This article is about an authentication, authorization, and accounting protocol. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... Dark Nebula Dark Nebula (Dark Zero in the original Japanese version) is a fictional character in the Kirby series of video games for Nintendo. ... The naked eye is a figure of speech referring to human visual perception that is unaided by enhancing equipment, such as a telescope or binoculars. ... For other uses, see Milky Way (disambiguation). ... Stonehenge, England, erected by Neolithic peoples ca. ... southern hemisphere highlighted in yellow (Antarctica not depicted). ... Vicente Yáñez Pinzón (c. ... 1499 was a common year starting on Sunday (see link for calendar) of the Gregorian calendar. ... To help compare different distances this page lists lengths between 1018 m (110 light years) and 1019 m (1100 light years). ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one year. ... This article is about Earth as a planet. ... CRUX is a lightweight, i686-optimized Linux distribution targeted at experienced Linux users. ...

General information

The Coalsack Dark Nebula covers nearly 7° by 5° and overlaps somewhat into the neighbour constellations Centaurus and Musca. Although this nebula was known to the people of the Southern Hemisphere in prehistoric times^{[citation needed]}, its first observation was reported by Vincente Yanez Pinzon in 1499. It was named “il Canopo fosco” by Amerigo Vespucci and was also called “Macula Magellani” (Magellan's Spot) or “Black Magellanic Cloud” in opposition to the Magellanic Clouds. This article describes the unit of angle. ... Centaurus (Latin for centaur) was one of the 48 constellations listed by Ptolemy, and counts also among the 88 modern constellations. ... Musca (Latin for Fly) is one of the minor southern constellations. ... Vicente Yáñez Pinzón (c. ... 1499 was a common year starting on Sunday (see link for calendar) of the Gregorian calendar. ... For the Italian ship named after Vespucci, see Amerigo Vespucci (ship). ... The two Magellanic Clouds are irregular dwarf galaxies that may be orbiting our Milky Way galaxy[1], and thus are members of our Local Group of galaxies. ...

In 1970, K. Mattila proved the Coalsack is not totally black; it has a very dim glow (10% of the brightness of the surrounding Milky Way) which comes from the reflection of the stars it obscures. Year 1970 ([[Rf 1970 == January 1 - The Unix epoch begins at 00:00:00 UTC January 2 - The last studio performance of The Beatles oman numerals|MCMLXX]]) was a common year starting on Thursday (link shows full calendar) of the Gregorian calendar. ...

The Coalsack is not present in the New General Catalogue and does not have an identification number. It is prominently featured in the Larry Niven and Jerry Pournelle science fiction novel The Mote in God's Eye. The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... This article does not cite any references or sources. ... Jerry Eugene Pournelle, Ph. ... Science fiction is a form of speculative fiction principally dealing with the impact of imagined science and technology, or both, upon society and persons as individuals. ... Cover of 1991-03-01 paperback edition The Mote in Gods Eye, by Larry Niven and Jerry Pournelle, was called possibly the finest science fiction novel I have ever read by Robert A. Heinlein. ...

Image File history File linksMetadata No higher resolution available. ...

The Coalsack is important in Australian Aboriginal Astronomy, and forms the head of the Emu in the sky in several Aboriginal cultures. Amongst the Wardaman people, it is said to be the head and shoulders of a law-man watching the people to ensure they don't break traditional law. Many of the Australian Aboriginal cultures have a strong element of astronomy. ... Aboriginal Australia contains a large number of tribal divisions and language groups, and, corresponding to this, a wide variety of diversity exists within cultural practices. ... The Wardaman people are a small group of Indigenous Australians living about 200km South-West of Katherine in the Northern Territory of Australia. ...