A beam of light can cross the entire universe in no time at all
A photon can cross a billion light-years while accumulating no elapsed time along its path. Special relativity links…
Inside the strange physics of why time stops at the speed of light
A clock aboard a fast-moving spacecraft does not break, lag or malfunction. It ticks normally for everyone inside.…
Why Einstein’s theories of relativity make time travel possible
This article is from Proof Positive, our friendly math newsletter that’s delivered to your inbox every Tuesday afternoon.…
She Turned Down A $1.1 Million Offer, Meet The Physicist Compared To Einstein
When Sabrina Gonzalez Pasterski was a teenager, she wasn’t just studying science – she was building an airplane,…
Physicists Devise Black Hole Alternative With a ‘Mini Universe’ at Its Center
Theoretically, black holes emerged from the principles of Albert Einstein’s general relativity (gravity as distortions of spacetime), but…
Can Our Model of the Cosmos Work Without Dark Energy? New Research Says It Can
Dark energy has been a mysterious element of cosmological equation since it was proposed three decades ago, but…
Einstein-Rosen Bridges May Not Be Wormholes After All, Physicists Reveal
The concept of the Einstein-Rosen bridge is often understood as a cosmic shortcut, akin to a tunnel that…
Scientists Discover Path to ‘Extreme Light Intensities’ That Could Enable Ultra-Powerful Laser Weapons and Advanced Tech
An international team of physicists has announced a “significant advance” in laser science that offers engineers a practical…
New theory argues wormholes are time mirrors, not cosmic tunnels
Theoretical research led by Professor Enrique Gaztañaga of the University of Portsmouth challenges the longstanding scientific belief that…
Myth of wormholes and the quantum meaning of Einstein-Rosen Bridge
For decades, wormholes have been hypothesized as mysterious tunnels that might let us cross galaxies or even time…