- A light-year, alternatively spelled light year (ly), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 1012 km), which is approximately 5.88 trillion mi. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (365.25 days). Because it includes the word “year”, the term is sometimes misinterpreted as a unit of time.
- Lake Elmo, Washington County, Minnesota, was named by A. B. Stickney, now of St. Paul, Minn.,, from a nearby lake, that had been named from the novel “St. Elmo.” The town was formerly called Oakdale from the many Black Oak (Quercus nigra) trees that grow hereabouts. It is not known where the novelist found the name for her book, but it is supposed she “evolved it out of the depth of her own consciousness.” She did not get it from that corposant known as “St. Elmo’s fire,” which was named for St. Elmo, the patron saint of navigators.