I think the scientists warnes Ras. About the Vex and darkness coming. If yiu read the Ras cards it mention (paraphrasing) "i shrugged off the burden of billions..." someone was theorizing that this is Ras. sacrificing humanity to the traveler to give it extra light, so it could save us from extinction. Ras. Is now trying to launch his offensive against the Vex which he has been planning since he got the message. He has been using Golden age tech to take over and revive the other Warminds, giving him even more computational power. I think later we will see a connection between the 9, and Ras. Along with Dr.Shim.