In a famous letter to a bereaved family friend, Einstein wrote: “For those of us who believe in physics, the distinction between past, present and future is only a stubbornly persistent illusion".

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Correct representation of negative and imaginary mumbers Universe is Expanding like a (Hyper) Balloon Human civilization has finally reached the stage to ask “What is time?” and unravel nature’s best ...

America's official time is kept at a government laboratory in Boulder, Colo., and according to the clock at the entrance, I was seven minutes behind schedule. I rush across the campus of the National ...