> Lights inside helmets to light up a person's face is a pretty dumb thing when you think about it Only if you are doing EVA astronomy and need pitch black dar

> Lights inside helmets to light up a person's face is a pretty dumb thing when you think about it Only if you are doing EVA astronomy and need pitch black darkness to see stuff outside. Because you can light up someone's face enough and still not interfere with their activities. Otherwise – it would be important to be able to see the other person's face, both to interact with them, and to gauge their well-being. Their phones are not exactly transparent, they are "holographic". They can project images larger than their own size. Same as many screens depicted in the show.