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 ...

The glow from faster-than-light particles gives us a unique way to explore the universe. Nothing can travel faster than light — in a vacuum. But when light slows down, sometimes matter can blaze ...

Speed is a fundamental concept in the universe, but what is the fastest thing ever recorded? While we typically think of ...

Whether you're sat on Earth, Mars, or Andromeda, if you measure the speed of light you'll find it chugging along at a cool 299,792,458 meters per second (983,571,056.43 feet per second), the ...

The speed of light is a constant, say our readers, but it can apparently be slower if you are far away - it’s all relative ...