In “A Brief History of Time,” first published in 1988, the British physicist Stephen Hawking explained how space and time are connected, interwoven, interdependent with each other. Since the universe ...

For more than a century, physics has treated space and time as the smooth stage on which the universe unfolds, a flexible fabric that bends but never breaks. A new wave of theories is now challenging ...

Intuitively, we know what time is, but try to explain it, and we end up tying our minds in knots. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.