One thing I've been pondering this week was the Celestials. At this point, was Ego the last full blooded Celestial before he was killed? Or are there others? In the first movie, we did see the Collector show Eson using the Power Stone then inexplicably at some point the Power Stone was stored on Morag. We also know Knowhere was the head of a Celestial that was being mined. Did Ego ever meet other Celestials? Are the Celestials loners who do their own thing? Did Ego try to recruit another Celestial and it went south? Thus leading to Ego adopting the plan to sire a child that could tap into his core?