# How Fast Does Light Travel Per Second?

## How fast does light travel per year?

But how far does light travel in a year? Basically, it moves at a speed of 299,792,458 meters per second (1080 million km/hour; 671 million mph), which works out to about 9,460.5 billion km (5,878.5 billion miles) per year.

## How fast is the speed of dark?

This mysterious energy makes up 80 percent of all matter in the universe. In a 2013 study, scientists determined that dark matter should have a speed of 54 meters per second, or 177 feet — slow compared to the speed of light [source: Armendariz-Picon and Neelakanta].

## How fast does light travel in kilometers per hour?

Light travels at a constant speed of 1,079,252,848.8 (1.07 billion) km per hour. That works out to 299,792,458 m/s, or about 670,616,629 mph (miles per hour).

## How fast is the Internet compared to the speed of light?

So to answer your question, the Internet is roughly 1/3 of the speed of light. Your mileage may vary, but you won’t improve on that much.