I watched this video from DestinyBungieOrg on YouTube referring Destiny Rotunda Experience E3 2013 and I got to thinking did the traveler make life on other planets and did it change the planets and did it make the enemy we will have to face in the destiny game
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Bungie hints at The Traveler terraforming the planets of our solar system even before the video so I would say yes to the first part of your question. As for whether its responsible for creating intelligent life, no info has surfaced.