Time feels like the most familiar thing in the world, yet it hides one of physics’ hardest questions: why do we only remember ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

It's 2 a.m., and the noise from your upstairs neighbor is keeping you awake again. Take solace in the fact that by living above you he may be shortening his life, even if only by a tiny fraction of a ...

Relativity Space said Wednesday that it had received its launch license from U.S. regulators, clearing the way for its first-ever orbital flight attempt on March 8. Relativity will be attempting to ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Albert Einstein's theory of general relativity has held up pretty well after a century out in the ...