How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

The speed of light is a fundamental constant, approximately 299,792,458 meters per second. It's the same for all observers and hasn't changed measurably over billions of years. Nothing can travel ...

Using ultra-fast laser pulses and special cameras, scientists have simulated an optical illusion that appears to defy Einstein's theory of special relativity. One consequence of special relativity is ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Einstein’s famous equation states that energy (E) equals mass (m) times the speed of light squared (c 2); the speed of light (c) is a universal physical constant exactly equal to 299,792,458 meters ...

Space — the final frontier. These are the words that introduce every episode of classic "Star Trek," the show that essentially popularized the concept of traveling the stars at the speed of light – or ...

Hornof, D., Helm, V., de Dios Rodriguez, E. et al. A snapshot of relativistic motion: visualizing the Terrell-Penrose effect. Commun Phys 8, 161 (2025). https://doi ...

The Sagnac effect, first observed over a century ago, remains central to our understanding of relativistic kinematics and the operational definitions of simultaneity. Fundamentally, this effect arises ...

Researchers from Stockholm University and the Indian Institute of Science Education and Research (IISER) Mohali have reported ...

All the Latest Game Footage and Images from A Slower Speed of Light A Slower Speed of Light is a first-person game prototype in which players navigate a 3D space while picking up orbs that reduce the ...