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,
British Champions Long Distance Cup British Champions Long Distance Cup The British Champions Long Distance Cup is a Group 2 flat horse race in Great Britain open to thoroughbreds aged three years or older. It is run at Ascot over a distance of 1 mile 7 furlongs and 209 yards (3,209 metres), and it is scheduled to take place as part of British Champions Day each year in October. The event was originally held at Newmarket under the title Jockey Club Cup. It was established in 1873, and was initially contested over 2¼ miles. The distance of the race was shortened to 1½ miles in