I can mourn internally, just be quiet about it. I have my moments but I'm not a real, expressive person, especially when it comes to like sadness.
A father may turn his back on his child, brothers and sisters may become inveterate enemies, husbands may desert their wives, wives their husbands. But a mother's love endures through all.
The most important thing we can do is inspire young minds and to advance the kind of science, math and technology education that will help youngsters take us to the next phase of space travel.