Lightspeed travel is a popular concept in sci-fi and pop culture, but it's not a technology we are likely to see anytime soon ...

Here’s how it works. The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second — a universal constant ...

[Kerry] decided to use the tube to measure the speed of light. There are several common methods to indirectly measure the speed of light by relating frequency to wavelength (for example ...

Last week Elon Musk said in one of his 100-plus daily tweets that “This is just a very basic first step. Earth and Mars will ultimately need greater than petabit/sec connectivity.” Petabit/second ...

The theory of special relativity is rife with counterintuitive and surprising effects, the most famous of which are length ...

Simulation Video of Light Travelling From New York to Back in Less Than a Second Amazes Viewers The motion of light is tough ...

In special relativity, the speed of light is the ultimate speed limit to the universe. Every single moving object in the universe is constrained by that fundamental limit. This isn’t something like ...

A series of new animations by a NASA scientist show just how zippy - and also torturously slow - the speed of light can be. Light-speed is the fastest that any material object can travel through ...

Meteors during the Leonid shower are considered to be some of the fastest to appear each year, NASA said, as they travel at ...

The completion of the light-speed rail network spanning Montreal's West Island and the North Shore to downtown has been ...