More recently, Otto Skutsch has advanced the theory that the name Helen might have two separate etymologies, which belong to different mythological figures respectively, namely *Sṷelenā (related to Sanskrit svaraṇā the shining one) and *Selenā, the first a Spartan goddess, connected to one or the other natural light phenomenon (especially St. Elmo's fire) and sister of the Dioscuri, the other a vegetation goddess worshiped in Therapne as Ἑλένα Δενδρῖτις (Helena of the Trees).