Gravity used to be the most dependable rule in the cosmic rulebook, the quiet background force that never changed its mind. Now a series of discoveries and bold claims are turning that certainty into ...

The idea of relative motion is an aspect of the theory of relativity (strictly, it’s Galilean relativity, rather than ...

We treat the seven-day week as a law of nature, yet France once tried ten-day weeks — and Bill Gates now imagines three.

The two pillars of modern physics, quantum theory and Einstein’s theory of general relativity, seem incompatible with each other. For those pillars to align, gravity would have to obey quantum physics ...

The Pauli exclusion principle is a cornerstone of the Standard Model of particle physics and is essential for the structure and stability of matter. Now an international collaboration of physicists ...

On 9 July 1925, Heisenberg sent a paper titled ‘Quantum-theoretical re-interpretation of kinematic and mechanical relations’ to Max Born, whom he was assisting at that time, and Born sent the paper to ...

Scientists pushed photons across the universe to test the speed of light—and found Einstein’s cosmic speed limit still holds ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them ...

Foundations in science and physics exist at the very core of the Netflix's hit show “Stranger Things," demonstrating to audiences for over a decade that our universe may be "stranger" than we care to ...

Edward Morley, born Jan. 29, 1838, is perhaps most famous for an experiment that didn't work. The speed of light is one of the most important constants that appears in nature and defines the ...