What is it about zombies that’s so engrossing? They’ve been a point of fascination for comic-book fans, moviegoers, and gamers for decades. In 1944, the fiendish Solomon Grundy was an early revenant ...

For centuries, the night sky has seemed frozen and unchanging, yet time-lapse observations reveal that the universe is in constant motion. From the expanding gas clouds of the Crab Nebula to the ...