https://www.youtube.com/watch?v=4BbuOn--ERI If, in the future, you find yourself missing your home planet and your family whilst piloting your lightship to Alpha Centauri, shedding a tear or two might not make you feel much better. The result of crying in space is less of a single-sexy-tear-down-the-cheek and more of a oh-god-get-this-hell-flubber-off-me-I-can't-breathe kinda deal. Better to just tough it out.