A light-year is the distance that light travels in a vacuum in one Earth year. It's a unit of astronomical distance.

There are approximately 31,000,000,000,000 feet in one light-year (that's 31 trillion feet).

This conversion helps to put very small, terrestrial distances into the context of the immense distances found in space.

No, 10,000 feet is an extremely small distance when compared to a light-year. It's a tiny fraction of the distance light travels in a year.