Board Thread:Television/@comment-1713281-20131004113215/@comment-26536533-20150930173844

no i said in the comics the celestials created the monolith to monitor human evolution, but theres no point introducing them to the mix now when the kree already fit that purpose and its already been confirmed to be kree in origin. so they will probably draw from celestial lore and attribute it to the kree

http://marvel.wikia.com/wiki/Celestials_(Race) see "the monolith"