Speed of light they appeared 13 billion years ago, when the universe was less than a billion years old. The fact that more distant objects appear to be younger, due to the finite speed of light, allows astronomers to infer the evolution of stars, of galaxies, and of the universe itself. Astronomical distances are sometimes expressed in light-years, especially in popular science publications and media. A light-year is the distance light travels in one year, around 9461 billion kilometres, 5879 billion miles, or 0.3066 parsecs. In round figures, a light year is nearly 10 trillion kilometres or nearly 6 trillion miles. Proxima Centauri,
2 or 3 Things I Know About Him of the few with a 100% rating on the aggregate review website Rotten Tomatoes. 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