Apollo astronauts observed mysterious flashes of light both with eyes open and closed, which scientists determined were caused by cosmic rays interacting with their retinas; this was confirmed through experiments using helmets equipped with cosmic ray detectors that detected simultaneous flashes, proving the phenomenon was a natural interaction between cosmic radiation and human eye tissue rather than any supernatural cause.
Deep Dive
Prerequisite Knowledge
- No data available.
Where to go next
- No data available.
Deep Dive
Why Apollo Astronauts Saw MYSTERIOUS Flashes!Added:
We would learn.
Among the Apollo astronauts who were the [music] first astronauts to leave Earth for a destination, they would see flashes of light. They would just see it with their eyes open and with their eyes closed. Evidence that something's getting triggered on their retina, just like what was happening in my CCD photos at the telescope on mountaintops. So, it's evidence that something's happening internal to the eye.
But, you still want to know what's causing it.
So, they decided, "Let's create a helmet for you that has detectors on it for cosmic rays. And if a cosmic ray triggers your helmet at the same time [music] you see a flash, there's hard evidence that [music] you are seeing the interaction of cosmic rays with your retina and not some mysterious cosmic [music] alien force trying to get inside your head. Sure enough, that's exactly what was observed.
Related Videos
Is dark matter real? - Why can't we find it? - physicist explains | Don Lincoln and Lex Fridman
LexClips
1K views•2026-05-30
Nobody Expected This Lava Reaction 🤯 #faits #facts
TendzDora
28K views•2026-05-30
Saptarshi Basu - Spectacular Voyage of Droplets: A Multiscale Journey to Extreme Flow Conditions
DAlembert-SU-CNRS
152 views•2026-06-02
A 6.0 Just Hit Hawaii — And It Came From The Wrong Place
TerraWatchHQ
115 views•2026-06-03
The Split-Second Mistake That Made Bouncing Bettys So Deadly
NoMansLandChannel
253 views•2026-06-02
The Silent Memory of Glass
UnchartedScienceworld
146 views•2026-05-30
The Difference In Charged And Neutral Particles
heavybrainspace
959 views•2026-05-29
A380 vs Every Vehicles Crash Test Challenge | Which One Win?
BeamLap
163 views•2026-05-29











