Earth.
An Astronomical Unit is a unit of distance measure defined as the mean (average) distance between the Earth and the Sun; thus, the earth orbits the sun at a distance of 1 Astronomical Unit. The Astronomical Unit was invented to make it easier to think of astronomical distances within the Solar System ... it is easier to get a feel for how close the planets and other bodies in the solar system are close to the sun in terms of Astronomical Units (AUs) than millions of kilometers: Mercury at 0.4 AU versus 50 million kilometers, Venus at 0.7 AU versus 108 million kilometers, etc.
Earth. An astronomical unit is the distance from the Earth to the Sun.
Earth is one astronomical unit away from the sun.
Earth
Earth. An astronomical unit is set as the distance between Earth and the Sun.
Earth
An astronomical unit (AU) is the mean distance from Earth to Sun, approximately 150 million km.
Planet Earth.One astronomical unit is roughly the distance between planet Earth and the Sun.
Earth. An astronomical unit is the distance from the Earth to the Sun.
Earth is one astronomical unit from the sun. The average distance between the sun and Earth is the definition of an astronomical unit.
Earth is one astronomical unit away from the sun.
Earth
Earth
Earth. An astronomical unit is set as the distance between Earth and the Sun.
Earth
Earth. The average sun to Earth distance is how one Astronomical Unit is defined (1 AU).
That would be Earth.
The Earth. The average sun to Earth distance is how one Astronomical Unit is defined (1 AU).