Light-year Light-year The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the term light-year is sometimes misinterpreted as a unit of time. The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in nonspecialist and popular science publications. The unit most commonly used in professional astrometry is the parsec
2 or 3 Things I Know About Him 2 or 3 Things I Know About Him 2 or 3 Things I Know About Him () is a documentary film in which German director Malte Ludin examines the impact of Nazism in his family. Malte's father, Hanns Ludin, was the Third Reich's ambassador to Slovakia. As such, he signed deportation orders that sent thousands of Jews to Auschwitz. Hanns Ludin was executed for war crimes in 1947. Malte Ludin did not undertake this film until after the death of his mother, Erla. The documentary does include clips of earlier interviews he conducted with Erla, however. Malte also interviews his