The parsec is 3.26 light years. Astronomers measure distances to remote galaxies in megaparsecs--millions of parsecs. This is about the longest commonly used length metric.
a Lightyear, around 1013 kilometres.
Usually Miles or Kilometers
It depends on what you are trying to measure. Long distances usually are measured in miles. Survey distances usually are measured in feet.
you would measure distances in centimetres, metres and kilo metres.
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.
The astronomical unit (AU) is equal to about 150 million kilometers and is commonly used to measure long distances within our solar system. It is the average distance between the Earth and the Sun and provides a convenient scale for discussing distances on an interplanetary scale.
No, a second is a unit of time, not a unit of distance. It is used to measure time intervals, not distances. Distances are typically measured in units such as meters, kilometers, or miles.
For long distances use " Measuring Wheel". These give readings generally in Feet which can be converted to any unit by appropriate multiplication factors. Some of these are 1-GRIP ON 10000 ft measuring wheel, 2-Stanley 77 194 MW408 12" Aluminum Wheel Measuring Wheel In Feet/Inches
To measure the distance of stars you have to measure by light years.
metres, kilometres .................................
Light years or parsecs
Miles or Kilometers