An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be ...

Technological civilization stands before an existential paradox. While the demand for artificial intelligence (AI) grows ...

Relationship to Speed: When a planet is closer to the Sun (near perihelion), it must move faster to sweep out the same area in a given time as when it is farther from the Sun (near aphelion).

Pressure, by definition, is the force exerted per unit area. Thus, the pressure exerted by a gas on the walls of its ...

Time is not absolute, with gravity and velocity affecting how fast it passes, making clocks at different heights or near ...

In 1887, one of the most important experiments in the history of physics took place. American scientists Michelson and Morley ...

In a cafe at CERN in 1992, three physicists realized they disagreed about how many constants are needed to describe all of nature. A recent paper suggests only one – time – is necessary.

They recreate how a camera would see objects traveling at 99.9% of the speed of light, revealing surprising relativistic ...

The effect, first predicted over 60 years ago and regarding objects traveling near the speed of light, has been lent support ...

Several leading quantum gravity theories predict that there is a dependence of the speed of light on photon energy, which would bridge incompatibilities between general relativity and quantum physics.

If you’re a newer runner, you’ve likely been bombarded with training plans discussing time on your feet and working on building up endurance and mileage. Maybe you’ve even heard about the benefits of ...