It is thought to have been distorted by magnetic torsion into the shape of two connected spirals, known popularly as a double helix, akin to the shape of DNA.
double bass | Double (association football) | double | Hedera helix | Helix | Double Dragon | body double | Double bass | double (baseball) | double agent | double feature | Mamee Double-Decker | Double Dare | the double | Nebula | double platinum | Double Dragon (TV series) | double-decker bus | Double (baseball) | Bombardier Double-deck Coach | The Double | nebula | NATO Double-Track Decision | Helix (comics) | Double Tenth Incident | Double-heading | double-headed eagle | Double-elimination tournament | Double Eagle II | Double Dutch Bus |