NASA's Saturn exploration spacecraft, Cassini , has discovered an atmosphere about the moon Enceladus . This is the first such discovery by Cassini, other than Titan , of the presence of an atmosphere around a Saturn moon.
Enceladus is not a satellite of Saturn.
( z1 satellite :polarity - :poss ( z2 planet :name ( z3 name :op "Saturn" ) ) :domain ( z4 planet :name ( z5 name :op "Enceladus" ) ) )