https://en.m.wikipedia.org/wiki/Cosmic_ray_visual_phenomena
"Cosmic ray visual phenomena, or "light flashes" (LF), are spontaneous flashes of light visually perceived by some astronauts outside the magnetosphereof the Earth, such as during the Apollo program. While LF may be the result of actual photons of visible light being sensed by the retina,[1] the LF discussed here could also pertain to phosphenes, which are sensations of light produced by the activation of neurons along the visual pathway.[2]"
"as the cosmic ray particles pass through the vitreous humour of the astronauts' eyes,[4] direct interaction with the optic nerve,[4] direct interaction with visual centres in the brain,[5] retinal receptor stimulation,[6] and a more general interaction of the retina with radiation.[7]"
"Some LF were reported to be clearly visible, while others were not. They manifested in different colors and shapes. How often each type was seen varied across astronauts' experiences, as evident in a survey of 59 astronauts.[8]"
they come in a variety of sizes colours shapes , they move , they appear to multiple persons at once , whether eyes are open or not .
strange space induced visuals ? Or communication