Elusive Jellyfish Nebula . ... Flanked by two yellow-tinted stars at the foot of a celestial twin - Mu and Eta Geminorum - the Jellyfish Nebula is the brighter arcing ridge of emission with dangling tentacles just right of center. Here, the cosmic jellyfish is seen to be part of bubble-shaped supernova remnant IC 443 , the expanding debris cloud from an exploded star some 5,000 light-years away. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...