I saw nothing similar to (sorry, don't know proper word) face-plates on aliens' heads: only eye-holes, or "bare" eyes, not shielded at all.[...]
lol, those black "eyes" have no lense, never blink, like insect eyes or else you got to be kidding.
actually, the ufologists have got it all wrong : )
the big black "eyes" of the "grey" are not really their eyes, and the grey color is not really the color of their skin.
the grey color is the color of their space suits and the big black "eyes" that we see are what covers their eyes.
why do people expect that someone who can build a ufo has to walk naked in hostile atmosphere?
everybody knows that aliens are actually green, how do people forget it?
therefore, whatever it is that covers their eyes, it certainly protects them from any harmful radiation.
on a side note, the aliens are no better.
when our peeps were to the moon, they nicknamed us as "silver cyclops" or just "one-eyed monsters".
as for the tip of the day:
if you search the maps very thoroughly you can sometimes find a special item that is called 'a piece of alien fabric', and when you research it you can patent the result and sell the license to earthly textile companies for hard cash.
it will revolutionize the earthly textile industry.
the tip of the day is that this is not true.