Tephra

Tephra was a substance ejected by volcanoes on the planet Lah'mu. Minerals in tephra made groundwater on the planet unpleasant to drink, so the Erso family employed GX-8 water vaporators at their homestead to collect water vapor from the air.
==Sources==
*Star Wars Day-at-a-Time Calendar 2021
* 
==Notes and references==
==External links==
*
Category:Substances