first time i saw the little blue light was when i was probably eight or ten. my great grandfather had just passed away the day before. the light woke me out of my sleep and i called for my mom, who came into the room and turned on the light. i could still see the blue light with the bedroom light on and kept pointing to it and asking her about it. she didn't see it. as far as "science" goes... let us not limit our understanding of to the gross physical stuff and chemistry. metaphysics is physics too, only its about subtler, higher frequencies.