▁After ▁the ▁first ▁modern ▁planet arium , ▁for ▁the ▁next ▁twenty ▁years ▁many ▁planet ari ums ▁were ▁established ▁in ▁Europe , ▁Japan ▁and ▁America , ▁however ▁not ▁in ▁India . ▁ ▁During ▁the ▁late ▁ 1 9 3 0 s , ▁Arm and ▁Sp itz , ▁a ▁part - time ▁lect urer ▁at ▁The ▁F els ▁Planet arium ▁ ▁of ▁the ▁Franklin ▁Institute ▁in ▁Philadelphia , ▁had ▁started ▁developing ▁his ▁own ▁project or ▁for ▁the ▁planet arium . ▁However , ▁while ▁design ing ▁an ▁in exp ensive ▁planet arium ▁project or , ▁Sp itz ▁realized ▁the ▁difficulties ▁involving ▁the ▁ icos ah ed ron ▁sh aped ▁project or ▁glo be . ▁He ▁approached ▁Albert ▁Ein stein ▁for ▁a ▁solution . ▁Following ▁Ein stein ' s ▁suggestion , ▁Sp itz ▁used ▁a ▁d ode c ah ed ron ▁and ▁managed ▁to ▁produce ▁an ▁in exp ensive ▁planet arium ▁project or . ▁This ▁planet arium ▁is ▁believed ▁to ▁be ▁the ▁only ▁planet arium ▁in ▁the ▁world ▁that ▁is ▁running ▁its ▁shows ▁with ▁this ▁project or ▁for ▁more ▁than ▁si xty ▁years . ▁ ▁Sus p ension ▁and ▁later ▁res umption ▁of ▁operation ▁The ▁project or ▁installed ▁in ▁K us umb ai ▁Mot ich and ▁Planet arium ▁is ▁Sp itz ▁A 1 ▁instrument ▁imported ▁from ▁Philadelphia . ▁It ▁is ▁the ▁oldest ▁planet arium ▁instrument ▁in ▁India ▁that ▁was ▁still ▁oper ational . ▁Since ▁ 2 0 0 4 , ▁the ▁project or ▁remained ▁out ▁of ▁order ▁resulting ▁susp ension ▁of ▁planet arium ▁shows . ▁ ▁However