Timetti Tageldant Tasnullant (S Teglizt: Royal Astronomical Society, S usegzel: RAS) d tiddukla tussnant yakk d tisbeddit tanafawt yessebɣasen ɣef tezrawt n tesnallunt d tussniwin n inagrawen inafuken d tkelsengamt (geophysic) d tussniwin niden teqqnen ar tussniwin-a, Asutel-is yezga-d deg usarag n Piccadilly di temdint n London, Ugar n 4000 n yigmamen yettekkan deg tddukla ayyi iy ttwasemman s imeddiden (comrades), Amur ameqran deg-sen d inagmayen (imnadiyen) imsaduren yakk d inelmaden n ulmud imineg.Azal n wakuẓ (¼) n igmamen ttidiren beṛṛa n Tgelda Yeddukklen. Tiddukla ayyi tettgi imliliyen ussnanen yal ayyur g London, Yakk d umlili agreɣlan asnullan amseggas deg yideggan yemgaraden n tegzirin tibṛitanyin RAS tga d tuddsa tabṛitaniyt yettekkan deg Tiddukla tasnallunt tagreɣlant akken i tga d agmam deg Science Council deg Tgelda Yeddukklen Tiddukla ayyi tennulfa-d deg useggas n 1820 s yisem n Tiddukla Tasnullant n London s yiswi n unagi asnullan Tisufaɣ Tagmemt Imsegrawen Tanedlist Tigrawin yeqqnen ar RAS Iselwayen Aselway amezwaru yakk deg umezruy n RAS yella d William Herschel Arrazen == Ẓeṛ daɣen ==