The only well-exposed color image of the Trinity test. (Jack W. Aeby/Manhattan Project/Public Domain) We don't always get to pinpoint the exact moment the world changes. But when the New Mexico dawn was torn open at 5:29 am on 16 July 1945,

Nearly 80 years after the event, trinitite still has the power to amaze.

DENVER — Tiny, exploding black holes might explain one of the biggest mysteries about how the universe, in its current form, came to be. In the cosmos, matter is much more common than antimatter. But scientists don’t know how matter achieved its dominance.