# How Long To Travel A Lightyear?

## How long would it take humans to travel one Lightyear?

This duration is a bit of a problem, as it makes space exploration a painstakingly slow process. Even if we hopped aboard the space shuttle discovery, which can travel 5 miles a second, it would take us about 37,200 years to go one light-year.

## How long does it take to travel 100 light years?

Using one of the fastest space crafts ever developed, the Voyager 1 space probe, it would take roughly 1,736,809 years to travel 100 light years, travelling at its maximum velocity of 62,140 kph.

## How fast is 1 Lightyear in mph?

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.

## How long does it take sound to travel one Lightyear?

In other words, you can transmit sound as a radio wave (and this would take about a year to cover 1 light year; the speed of light through, say, air, is slightly lower than the speed of light in a vacuum, thus it would take slightly longer than 1 year),