Tourists of time all know one rule: never change the past. Whether it's preventing your own conception or handing the blueprints to a time machine to a younger version of yourself, generating a ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

"Once you reach a cosmic scale, terms and conditions apply." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There is no denying the awesome ...

As new and powerful telescopes gather fresh data about the universe, they reveal the limits of older theories like Einstein's relativity. When you purchase through links on our site, we may earn an ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...