▁H AR PS - N ▁and ▁H I RES ▁data ▁showed ▁that ▁Ke pler - 1 0 c ▁was ▁much ▁less ▁massive ▁than ▁originally ▁thought , ▁instead ▁around ▁ 7 . 3 7 ▁( 6 . 1 8 ▁to ▁ 8 . 6 9 ) ▁ ▁with ▁a ▁mean ▁density ▁of ▁ 3 . 1 4 ▁g / cm 3 . ▁Instead ▁of ▁a ▁primarily ▁rock y ▁composition , ▁the ▁more ▁accur ately ▁determined ▁mass ▁of ▁Ke pler - 1 0 c ▁suggests ▁a ▁world ▁made ▁almost ▁entirely ▁of ▁vol at iles , ▁mainly ▁water . ▁ ▁See ▁also ▁▁ 5 5 ▁Can cri ▁e ▁ ▁Ke pler - 1 0 b ▁ ▁Ke pler - 2 0 b ▁ ▁References ▁ ▁Category : Ex op lan ets ▁discovered ▁in ▁ 2 0 1 1 ▁C ▁Category : Trans iting ▁ex op lan ets ▁Category : D rac o ▁( const ell ation ) ▁ 1 0 c ▁Category : M ega - E arth s <0x0A> </s> ▁O pp osition ▁may ▁refer ▁to : ▁ ▁Arts ▁and ▁media ▁ ▁O pp osition ▁( Alt ars ▁EP ), ▁ 2 0 1 1 ▁EP ▁by ▁Christian ▁metal core ▁band ▁Alt ars ▁ ▁The ▁O pp osition ▁( band ), ▁a ▁London ▁post - p unk ▁band ▁ ▁The ▁O pp osition ▁with ▁Jordan ▁Kle pper , ▁a ▁late - night ▁television ▁series ▁on ▁Com edy ▁Central ▁ ▁Polit ics ▁ ▁Lo yal ▁opposition ▁ ▁O pp osition ▁( par liament ary ), ▁a