A light-year is the distance that light travels in one Earth year, which is about 9.461 trillion kilometers or 5.879 trillion miles.

25 light-years is equal to 236,525,000,000,000,000 meters.

Meters are too small a unit to practically measure the immense distances in space. Light-years provide a more manageable scale.

In astronomical terms, 25 light-years is considered relatively close. Our Sun is about 4.37 light-years away from Proxima Centauri, the nearest star.