, ▁which ▁disappeared ▁on ▁ 2 4 ▁July ▁ 1 9 8 1 ▁( a ▁month ▁after ▁launch ). ▁Kos mos ▁contained ▁no ▁vol atile ▁prop ell ant , ▁therefore , ▁there ▁appeared ▁to ▁be ▁nothing ▁internal ▁to ▁the ▁satellite ▁which ▁could ▁have ▁caused ▁the ▁destruct ive ▁explos ion ▁which ▁took ▁place . ▁However , ▁the ▁case ▁has ▁not ▁been ▁proven ▁and ▁another ▁hypothesis ▁forward ed ▁is ▁that ▁the ▁battery ▁expl oded . ▁Track ing ▁showed ▁it ▁broke ▁up , ▁into ▁ 3 0 0 ▁new ▁objects . ▁ ▁Many ▁impact s ▁have ▁been ▁confirmed ▁since . ▁For ▁example , ▁on ▁ 2 4 ▁July ▁ 1 9 9 6 , ▁the ▁French ▁mic ros at ellite ▁Cer ise ▁was ▁hit ▁by ▁fragments ▁of ▁an ▁Ari ane - 1 ▁H - 1 0 ▁upper - stage ▁boost er ▁which ▁expl oded ▁in ▁November ▁ 1 9 8 6 . ▁On ▁ 2 9 ▁March ▁ 2 0 0 6 , ▁the ▁Russian ▁E ks press ▁AM 1 1 ▁communic ations ▁satellite ▁was ▁struck ▁by ▁an ▁unknown ▁object ▁and ▁rendered ▁in oper able . ▁On ▁October ▁ 1 3 , ▁ 2 0 0 9 , ▁Terra ▁suffered ▁a ▁single ▁battery ▁cell ▁failure ▁anom aly ▁and ▁a ▁battery ▁he ater ▁control ▁anom aly ▁which ▁were ▁subsequently ▁considered ▁likely ▁the ▁result ▁of ▁an ▁M MO D ▁strike . ▁On ▁March ▁ 1 2 , ▁ 2 0 1 0 , ▁A ura ▁lost ▁power ▁from ▁one - half ▁of ▁one ▁of ▁its ▁ 1 1