Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass ... speed limit — nothing with mass can travel faster than light. Einstein’s equation ...

Can we journey through time? Sci-fi author Dete Meserve presents a compelling case for our future in the past.

The discovery in 1998 that the Universe is expanding faster over time shook the foundations of cosmology. This finding ...

In 2015, a piece of equipment at an observatory in the US moved one quintillionth (10-18) of a meter. This tiny movement was ...

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

The Terrell-Penrose effect, predicted in 1959, suggests that objects moving at speeds close to that of light appear rotated.

Explore wormholes: theoretical cosmic shortcuts through spacetime. Learn if they're real, what they might look like, and ...

The idea was first hypothesized about 70 years ago. In a bizarre repercussion of Albert Einstein's Special Theory of ...

The speed of light was a mystery for millennia, a fugitive constant that escaped measurement and understanding. Now among the ...

Across the pages of Hindu scriptures, there are tales where time bends, realities duplicate, and consciousness transcends the ...

The discovery in 1998 that the Universe is expanding faster over time shook the foundations ... Still, others question whether Einstein’s theory of general relativity needs a rewrite.