Historically, the astronomical unit was conceived as the average Earth-Sun distance (the average of Earth's aphelion and perihelion), before its modern redefinition in 2012. The astronomical unit is used …

Astronomical unit, a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km (92,955,807.3 miles).

Nov 9, 2024 · The astronomical unit (AU) is a standard unit of measurement roughly equal to the distance between the Sun and Earth. It provides a convenient scale for comparing the distances of …

Jan 1, 2026 · One astronomical unit is the approximate mean distance between Earth and the sun. It’s about 93 million miles (150 million km), or 8 light-minutes.

Oct 6, 2025 · What is an Astronomical Unit? An Astronomical Unit (AU) is a unit of measurement used in astronomy to represent the average distance between the Earth and the Sun. It is a fundamental unit …

Sep 27, 2023 · Astronomical Unit (AU) - an astronomical unit equal to 149,597,870,700 meters, which determines what is the average distance of the Earth from the Sun. It is a non-system unit, and its …

An Astronomical Unit (AU) is a standard unit of length used for measuring distances within our Solar System. It is defined as the average distance between the center of the Earth and the center of the Sun.

Jan 3, 2026 · The meaning of ASTRONOMICAL UNIT is a unit of length used in astronomy equal to the mean distance of the earth from the sun or about 93 million miles (150 million kilometers).

The Astronomical Unit (AU) represents a distance of Earth's average distance to the Sun, or about 93,000,000 miles. Giving the distance between the Sun and Pluto as 40 AU allows the use of …

The astronomical unit (AU) is a unit of length derived from the Earth's orbit. It is the average distance the Earth gets from the Sun on the long axis of the ellipse.