A theoretical particle that travels faster than light, the tachyon has long intrigued physicists and fueled decades of speculation. Initially conceived as a possible solution to quantum and relativity ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed ...

First conceived as a result of Einstein’s general theory of relativity ... Will We Ever Be Able to Time Travel Into the Past? We might experience the effects of classical physics most prominently in ...

Euclid space telescope sent some images back to Earth during an early testing phase. While reviewing the pictures, astronomer ...

The theory is a series of equations defined by Einstein. These equations combine space and time to create space-time. Gravity is explained by these equations, which are consistent with what we see ...

Einstein’s ... the theory of relativity is the nature and behavior of light. In the 19th century, the prevailing idea was that light is a wave motion, and therefore needs a medium to travel ...