Many theories are rock-solid: Scientists have just as much confidence in the theories of relativity, quantum mechanics, ...

Time dilation, a captivating concept embedded in Einstein’s theory of relativity, has been experimentally validated on Earth.

The concept of time travel, filled with magic, has long danced on the boundary between science and science fiction. From ...

The blackboard was not the only piece of history left by Einstein during his visit. He signed a 1713 first edition of ...

Textbooks give strange, imprecise explanations of where things happen in quantum mechanics. Consistency with gravity needs a fresh approach.

Black holes are not just "monsters that devour everything"; they also cause strange changes in time itself. According to ...

According to Newtonian physics, the gravitational attraction between two masses is proportional to the inverse of the square ...

The questions this world raises are immense, and its relationship with the other pillar of modern physics — Albert Einstein’s general theory of relativity — is uneasy.

A radical new theory regarding the origin of the universe suggests that gravitational waves, tiny ripples in spacetime first ...

A century after Heisenberg formulated his theory, the field has transformed our understanding of the physical world, yet many ...

A Czech-American physicist revives our fascination with time travel by arguing that time itself may hold three hidden ...

Cells exposed to a month of extraterrestrial conditions accumulated molecular changes associated with aging and mutations ...