Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

The way time ticks forward in our universe has long stumped physicists. Now, a new set of tools from entangled atoms to black ...

Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but ...

If true, the idea would blow past one of physics’ most sacred limits: that parallel versions of reality can never talk to ...

Neutrino particles have extremely small masses, yet there are so many of them that they carve out the large-scale structure ...