Communication is key. That’s true on Earth and it’s true in space. But in space, you need to contend with a crucial fact of ...

We know that measuring the speed of light with an Arduino is possible. It’s just that the implementation is hard. [Udo] hit upon the idea of pulsing a laser pointer and measuring the time of the ...

A: After centuries of developing improved instruments to measure everything in the physical world with increasing precision, scientists have agreed to define the speed of light as precisely ...

On its surface, entanglement allows particles to communicate over vast distances instantly, apparently violating the speed of light. But while ...

Light from the Sun reaches Earth through the vacuum of space. The speed of light in air is very close to 300 000 000 m/s. which is nearly a million times faster than the speed of sound ...

In science fiction, people often find a way to move at the speed of light. But you might find yourself asking, could your ...

The speed of light is determined by the medium (material) through which the light is travelling. Light travels faster in a vacuum than it does in any other medium. Light changes speed as it passes ...

Astronomers monitoring a supermassive black hole in the heart of a distant galaxy have detected features never seen before ...

UKRAINE has unveiled a laser weapon dubbed 'Trident' that blasts aerial threats at the speed of light. The Star Wars-style weapon can shoot down drones and planes from over a mile away and could ...

The blue and redshifted colours were calculated for Rudolph travelling at 10% of the speed of light. Brown is a tricky colour since it’s a de-saturated orange.