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If you define 'distance' as the shortest line between to objects. (Example: the moon and the Earth; or say, Suburb A and Suburb B, then such distances are measured in Metre if the distance is shorter than around about 1 Kilometre, or,. If the distance is greater than a few hundred Metre, it is always measured in Kilometre.
Stellar distances are measured in light-years, which is the average distance between the Earth and the Sun.
You don't, miles are not a unit in the metric system. All distances are measured in metres. Prefixes are used for multiples or fractions of a metre. Distances that used to be measured in miles would, today, be measured in kilometres.
East and west distances can be measured using longitude lines, imaginary lines that connect the Earth's poles. The distance between any two longitudes is the greatest at the equator, and zero at the poles.
The unit used is the astronomical unit, defined as the semimajor axis (mean radius) of the Earth's orbit. The distances are scaled according to Kepler's laws of planetary motion. The fundamental distance is the distance to Venus on a close approach, which was measured accurately by triangulation from two points on the Earth's surface during a transit.
lightyear
It depends on what you are trying to measure. Long distances usually are measured in miles. Survey distances usually are measured in feet.
If you define 'distance' as the shortest line between to objects. (Example: the moon and the Earth; or say, Suburb A and Suburb B, then such distances are measured in Metre if the distance is shorter than around about 1 Kilometre, or,. If the distance is greater than a few hundred Metre, it is always measured in Kilometre.
AU is not used to measure the distances on earth, because a astronomical unit is a unit of measurement equal to the distance between Earth and Sun. So that's why you cannot use Au for measure the distances on Earth.
Light Year is unit for all astronomic distances
Because the Earth is sperical is shape.
Stellar distances, like the distances of stars and galaxies from Earth
Stellar distances are measured in light-years, which is the average distance between the Earth and the Sun.
You don't, miles are not a unit in the metric system. All distances are measured in metres. Prefixes are used for multiples or fractions of a metre. Distances that used to be measured in miles would, today, be measured in kilometres.
An Astronomical Unit is the distance between Earth and the Sun and is used as a measurement unit for measuring the distances of other objects from Earth.
1 astronomical unit.
East and west distances can be measured using longitude lines, imaginary lines that connect the Earth's poles. The distance between any two longitudes is the greatest at the equator, and zero at the poles.