Byutix, Helyar's elder sister, is in many ways more senescent. Where Helyar's worlds have remained inhabited, most of Helyar has been reduced to dust.
Simud

Heuser

Delkash

Orethus

Orethus' meager gravity could not hold onto its seas and atmosphere for long. Life sprung up on this world in those seas, but slowly moved underground as they dried up. Orethus' surface temperature fell, but deep moist caverns underground remained habitable. In this environment, the Skladyvat evolved cellulose skin analogous to paper. While resistant to tearing in low gravity dry environments, it has forced the Skladyvat to remain isolated from other species.