There
are no more Ethereans left in the Antaran Sector. The success
of the gas giant terraforming project was such that the Hegemony
ordered every available gas giant converted to a more usable
form. The last herd of Antaran Ethereans were wiped out in 9641
GC. Those who fled to the Orion Sector eventually split into
two separate races, the Eoladi and the Imsaeis, and colonized
many of the Orion Sectors gas giants during the Long Night.
Their violent opposition to gas giant terraforming technology
led them to launch sabotage operations against the local Orion
races when they too came upon this knowledge at the end of the
second Orion civil war.