The universe comes with a built‑in speed cap, a hard limit that shapes everything from how stars shine to how cause and ...

Imagine you’re in a car driving across the country watching the landscape. A tree in the distance gets closer to your car, passes right by you, then moves off again in the distance behind you. Of ...

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of ...