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Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
For instance, Markarian galaxies, named after Benjamin Markarian, are galaxies with excess blue and ultraviolet emission; [5] galaxies in the Atlas of Peculiar Galaxies are assigned an Arp number after Halton Arp who produced the catalog; etc. Objects in these catalogs are excluded below, except in cases where they carry the name of an ...
Objects south of the celestial equator are catalogued somewhat less thoroughly, but many were included based on observation by John Herschel or James Dunlop. The NGC contained multiple errors, but attempts to eliminate them were made by the Revised New General Catalogue (RNGC) by Jack W. Sulentic and William G. Tifft in 1973, NGC2000.0 by Roger ...
The Council of Europe Commissioner for Human Rights is an independent and impartial non-judicial institution established in 1999 by the Strasbourg-based Council of Europe, to promote awareness of and respect for human rights in the council's 46 member states. The activities of Commissioner focus on three major, closely related areas:
The observable universe contains as many as an estimated 2 trillion galaxies [36] [37] [38] and, overall, as many as an estimated 10 24 stars [39] [40] – more stars (and, potentially, Earth-like planets) than all the grains of beach sand on planet Earth. [41] [42] [43] Other estimates are in the hundreds of billions rather than trillions.
The Leo Cluster (Abell 1367) is a galaxy cluster about 330 million light-years distant (z = 0.022 [1]) in the constellation Leo, with at least 70 major galaxies. The galaxy known as NGC 3842 is the brightest member of this cluster. [4]
Stars may have multiple proper names, as many different cultures named them independently. Polaris, for example, has also been known by the names Alruccabah, Angel Stern, Cynosura, the Lodestar, Mismar, Navigatoria, Phoenice, the Pole Star, the Star of Arcady, Tramontana and Yilduz at various times and places by different cultures in human history.
A Human Rights Violations Investigation Commission formed in 1999 and reported in 2002. [3] Norway Truth and Reconciliation Commission Panama The Panama Truth Commission (Comisión de la Verdad) was established in 2000 and reported that the former military regime had engaged in torture and other forms of cruel, inhuman, and degrading treatment ...