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Banksy is a pseudonymous England-based street artist, political activist and film director whose real name and identity remain unconfirmed and the subject of speculation. Active since the 1990s, his satirical street art and subversive epigrams combine dark humour with graffiti executed in a distinctive stenciling technique. His works of political and social commentary have appeared on streets, walls and bridges throughout the world. Banksy's work grew out of the Bristol underground scene, which involved collaborations between artists and musicians. Banksy says that he was inspired by 3D, a graffiti artist and founding member of the musical group Massive Attack.



Ralf Winkler, alias A. R. Penck, was a German painter, printmaker, sculptor, and jazz drummer. A neo-expressionist, he became known for his visual style, reminiscent of the influence of primitive art.





Franz Xaver Freiherr (from 1801) von Zach, Baron (Hungarian: Zách János Ferenc) was an Austro-German astronomer, surveyor, mathematician, science historian and officer of Hungarian origin. He rendered outstanding services in the exploration of the solar system and the organization of international astronomy, after whom a lunar crater (Zach) and an asteroid ((999) Zachia) were named, among others. He was also the founder of the first scientific journals and organised the first astronomical congress in 1798.

Christian Friedrich Goldbach was a German astronomer, cartographer and professor of astronomy at the Imperial University of Moscow.

















































































