Science

How fast is light?


3 Answers

The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph...

{{ relativeTimeResolver(1601255579051) }}

LIVE
Points points 128
Rating 0

Light travels 671 million miles or 1.08 billion kilometres in one hour. Commonly, the speed of light is also represented as 3.8 meters per second.

{{ relativeTimeResolver(1601172513172) }}

LIVE
Points points 84
Rating 2

The speed of light in a vacuum is 186,282 miles per second, and in theory nothing can travel faster than light. In miles per hour, light speed is about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.

{{ relativeTimeResolver(1601253305148) }}

LIVE
Points points 123
Rating 1
Sign-in to view all answers

Similar Questions
Science 3 Answers

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE