<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?ni nini kilichosababisha utendakazi wa wasukumaji kwenye moduli ya nauka, iliyotolewa na shirika la nafasi la urusi roscosmos, bado haijabainika, maafisa wa nasa walisema.  <response>: what caused the thrusters of the nauka module, delivered by the russian space agency roscosmos, to malfunction has yet to be determined, nasa officials said. 