A lightyear is the distance that light travels in a vacuum in one Julian year (365.25 days). It's a unit of astronomical distance.

10 million yards is equivalent to about 5,700 miles, which is a significant distance on Earth but extremely small when compared to a lightyear.

The result is 0.0000 because 10 million yards is an incredibly tiny distance compared to the vastness of a lightyear. The exact value is a very small decimal number that rounds down to zero for practical purposes in this context.

Yards and lightyears are not typically used together in direct calculations because they measure vastly different scales – one for terrestrial distances and the other for interstellar distances. This conversion is mainly for conceptual understanding.