Nicolaus Copernicus Prussia also resisted the Polish crown's efforts for greater control over the region. "Encyclopædia Britannica", "Encyclopedia Americana", "The Concise Columbia Encyclopedia", "The Oxford World Encyclopedia", and "World Book Encyclopedia" refer to Copernicus as a "Polish astronomer". Sheila Rabin, writing in the "Stanford Encyclopedia of Philosophy", describes Copernicus as a "child of a German family [who] was a subject of the Polish crown", while Manfred Weissenbacher writes that Copernicus's father was a Germanized Pole. There are additional arguments for Kopernik's Polish descent on his father's side. Kopernik's Y-DNA haplogroup, R1b L51, is found in southern Poland (in Silesia, where his father
Copernicus Science Centre Roots of civilization, Lightzone, Bzzz!); the exhibit for teenagers – RE: generation was opened 3 March 2011; a planetarium The Heavens of Copernicus opened on 19 June, the Discovery Park on 15 July, chemistry laboratory - 18 October; biology laboratory - 15 November, robotics workshop - 6 December, and physics laboratory - 20 December. Since 2008, the Copernicus Science Centre together with Polish Radio has organized the Science Picnic - Europe's largest outdoor science-popularization event. In 2011 the Centre hosted the ECSITE conference (European Network of Science Centres and Museums) – one of the most important events in the field