By Michael Ausiello
Updated February 25, 2009 at 05:59 AM EST

Sci Fi Channel’s newest Stargate incarnation has added two more crew members.

ER vet Ming-Na and Smallville grad Elyse Levesque have come aboard Stargate Universe, sources confirm to me exclusively. The pair join previously announced recruits Robert Carlyle, Lou Diamond Phillips, Alaina Huffman, Justin Louis, David Blue, Jamil Walker Smith and Brian J. Smith.

Sci Fi’s third SG series, which is scheduled to bow in October, follows a diverse group of soldiers, scientists, and civilians who are stranded on an ancient ship in the far reaches of space.

Ming-Na will play Camille Wray, an HR bigwig and the highest-ranking survivor. Levesque, meanwhile, stars as Chloe Armstrong, the wild and immature daughter of a U.S. Senator.

Production on SG-U got underway last week in Vancouver.

Are you on board with the latest additions? Comment away below!