According to the principles of special relativity, as postulated by Albert Einstein, an object with mass cannot reach or exceed the speed of light in a vacuum. However, for the sake of hypothetical discussion, let's assume you were able to travel at the speed of light.
In that scenario, since you're traveling at the speed of light, time dilation effects come into play. From your perspective, time would appear to stand still. However, from an outside observer's perspective, time would still pass normally.
A light year is defined as the distance that light travels in one year in a vacuum. The speed of light in a vacuum is approximately 299,792,458 meters per second.
To calculate the time it would take you to travel one light year at the speed of light, we can use the formula:
Time = Distance / Speed
Plugging in the values:
Time = 1 light year / (299,792,458 meters per second)
Calculating this, we find that it would take you approximately 1 year to travel one light year from an observer's perspective. However, from your own perspective, no time would pass.