Nothing whatsoever to do with the Athletics Union, this stands for Astronomical Units, and is a standard unit of length within the Solar System One AU is defined as the mean distance between the Earth and the Sun, and is equivalent to about 150 million km So Mercury is 0 4AU from the Sun, Mars is 1 5AU, and Pluto around 38AU It gets a bit silly to try to measure interstellar distances with this yardstick, the nearest star being about 250,000AU away, but it is very useful in the case of the planets
Short for audio, a common format for sound files on UNIX machines It is also the standard audio file format for the Java programming language On PCs, two other popular sound formats are WAV and MIDI
a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia
An audio sound format developed for Sun workstations which is often used to distribute sound clips via the Web See also: WAV, RealPlayer
AU is short for Astronomical Unit and defined as: the radius of an unperturbed circular orbit around the Sun of a massless body having an orbital period of 2*(pi)/k days (k is the Gaussian gravitational constant) One AU is slightly less than the average distance between the Earth and the Sun (approximately 1 5x10^11 m) See the table of astrodynamic constants for precise values [1]
Sound file format, originally for SUN UNIX systems, now also supported on PCs and Macs
Australia (in Internet addresses). astronomical unit. The symbol for the element gold
An audio format that originated on UNIX systems but has since been ported to virtually every other platform out there from the Newton on up Note though that these files can be either stereo or mono; stereo is not supported on as many machines as mono
The extension " au" (audio) indicates a type of sound file that you may encounter on the Web
a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers)
The ability to alternate between various communications services, for example, from voice tranmission to data transmission
A single girl (or, rarely, a boy) who helps a host family with childcare and/or housework while staying as a guest with a host family and generally receiving a small allowance (or pocket money)
An au pair is a young person from a foreign country who lives with a family in order to learn the language and who helps to look after the children. a young person, usually a woman, who stays with a family in a foreign country to learn the language, and looks after their children for a small wage