The smallest time interval ever defined. Named after theoretical physicist Max Planck (1858-1947), Planck time is 10-43 seconds; however, the only measurement ever actually made was more than twice as ...

Below these scales, our current theories about space and time completely break down. If we try to describe the universe at a time before 10 -43 seconds in its history — the Planck era — we discover ...

Distance scales from the Planck length to a 93-billion-light-year observable universe expose extreme limits of physics and hint at unknown phenomena where current laws break down.

I’d like to invite you to an even higher level of nerdom! Every good nerd knows that E=mc^2. Every great nerd knows that, really, E^2=m^2c^4+p^2c^2 Want to know what that even means? Sure, I’ll tell ...

A common height that seems normal in our human-scale world. Yet, when we compare it to the smallest and largest conceivable distances in ...

No matter how much evidence there is supporting their existence, black holes remain firmly in the realm of theoretical physics. Because of their properties—their structure, the fact that they emit no ...

A research team led by Prof. Dr. Yang Yong from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has revealed a remarkable quantum tunneling phenomenon across double ...