Eight bright X-ray sources located far beyond the galaxy at distances of hundreds of millions of
light - years were observed with Chandra, which revealed that the X-rays from these distant sources are
absorbed selectively by oxygen ions in the vicinity of our galaxy.
Goji berry fruits also contain zeaxanthin, an important dietary carotenoid
selectively absorbed into the retinal macula lutea where it is thought to provide antioxidant and protective
light - filtering roles.