NOUN
- 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)
How To Use Astronomical Unit In A Sentence
- Light - year is an astronomical unit.
- In astronomy, the preferred unit of measurement for such distances is the parsec, which is defined as the distance at which an object will appear to move one arcsecond of parallax when the observer moves one astronomical unit perpendicular to the line of sight to the observer. Ann Aguirre » Blog Archive » A day in the life – blog Jeopardy
- The parsec in turn is defined to be a certain multiple of the astronomical unit original such that the parallax of a star as it appears from the Earth is 1 arcsecond. The Speculist: Um, no
- The close binary Algol system contains a radio-bright KIV subgiant star in a very close (0.062 astronomical units) and rapid (2.86 day) orbit with a main sequence B8 star. Naturejobs - All Jobs
- In astronomy, the preferred unit of measurement for such distances is the parsec, which is defined as the distance at which an object will appear to move one arcsecond of parallax when the observer moves one astronomical unit perpendicular to the line of sight to the observer. Ann Aguirre » Blog Archive » A day in the life – blog Jeopardy
- Typical distances from the Sun are 10,000 astronomical units, and typical orbital periods are on the order of 1 million years.
