The universe’s accelerating expansion has long puzzled physicists. For decades, dark energy, an unseen force thought to make ...

Scientists propose a new gravity theory using Friedmann equations. Their model explains the universe’s accelerating expansion ...

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study ...

In high-intensity laser–matter interactions, including laser-induced particle acceleration, physicists generally want to work ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Learn the key physics definitions of position, displacement, velocity, and acceleration explained clearly and simply. This quick breakdown helps build a strong foundation for understanding motion in ...

Solar physicists say they have found a key source of intense gamma rays unleashed when Earth's nearest star produces its most ...

Morin, L.R.M. (2026) Conjecture on Cosmological Redshift: Action Instead of Velocity, No Need for Dark Energy. Journal of ...

Abstract: In a paper by Willems et al., it was shown that persistently exciting data can be used to represent the input-output behavior of a linear system. Based on this fundamental result, we derive ...

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...