Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why does time change when traveling close to the ...

Here’s how it works. In our latest space mysteries piece we take a look at what would happen if you moved at the speed of light. (Image credit: Silver555 via Getty Images) ...

The images were then combined to include only those where each object is illuminated by the laser at the moment when light would have been emitted if the speed of light were only two meters per ...

The idea of traveling faster than light has fascinated scientists and dreamers for generations. With stars and galaxies separated by unimaginable distances, humanity continues to explore how we might ...

The fastest things ever made by humans are spacecraft, and the fastest spacecraft reached 330,000 mph – only 0.05% the speed of light. But there are ways to go faster.

Light moves faster than anything in the universe, but its speed depends on what it's traveling through. (Image credit: Getty) The universe has a speed limit, and it's the speed of light.