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 ...

Researchers at Princeton University and the University of Washington have developed a camera system that processes images at unprecedented speeds without the need for electrical power. The technology ...

Although they travel at the fastest possible speed (the speed of light,) they take a while to get here. The universe is big, so the news is delayed by the vast gulfs of space it has to cross to ...