ior ▁dis quis it io . ▁ ▁Gal ile o ▁replied ▁in ▁December ▁ 1 6 1 2 ▁with ▁a ▁third ▁letter ▁to ▁Wel ser ▁in ▁which ▁he ▁claimed ▁that ▁he , ▁prior ▁to ▁Sche iner , ▁had ▁discovered ▁sun sp ots . ▁In ▁ 1 6 1 3 , ▁under ▁the ▁aus p ices ▁of ▁the ▁Acc adem ia ▁dei ▁L ince i , ▁Gal ile o ▁published ▁'' I st oria ▁e ▁dim ost raz ioni ▁int orno ▁alle ▁mac ch ie ▁sol ari ▁e ▁loro ▁accident i '' ▁(" History ▁and ▁demonstr ation ▁regarding ▁sun sp ots ▁and ▁their ▁behavior "), ▁ ▁confirm ing ▁that ▁sun sp ots ▁were ▁present , ▁disappear ing ▁and ▁reform ing , ▁on ▁the ▁cor rupt ible ▁surface ▁of ▁the ▁Sun , ▁which ▁with ▁reasonable ▁probability ▁drew ▁them ▁along ▁with ▁its ▁rotation . ▁ ▁Death ▁ ▁Wel ser , ▁who ▁suffered ▁from ▁severe ▁g out , ▁died ▁the ▁following ▁year , ▁after ▁going ▁through ▁economic ▁troubles ▁that ▁had ▁dist urbed ▁his ▁final ▁years ▁of ▁life . ▁ ▁Notes ▁ ▁References ▁ ▁Category : 1 5 5 8 ▁birth s ▁Category : 1 6 1 4 ▁death s ▁Category : Pe ople ▁from ▁A ugs burg ▁Category : G erman ▁astronom ers ▁Category : G erman ▁bank ers ▁Category : M embers ▁of ▁the ▁L ince an ▁Academy ▁Category : 1 6 th - century ▁German ▁business people ▁Category : 1 7 th - century ▁German ▁business people ▁Category : 1 7 th - century ▁German