A massive explosion in Beirut kills more than 100 people and destroys part of the city; the SpaceX Crew Dragon Endeavour spacecraft lands in the Gulf of Mexico off the coast of Pensacola, Fla.; the Apple Fire in Cherry Valley, Calif.; Tropical Storm Isaias causes damage In N.J. Here’s a look at 16 of the best photos of the week, selected by photo editors at The Washington Post.