What would you like to do?

Why an astronomical unit is not used to measure distance on earth?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

There is nowhere on earth which would be an astronomical unit from anywhere else on earth. The furthest that one could get is approx one eighth of one thousandths of an AU.
Thanks for the feedback!
It is a very large unit for such scales. Also, it's better to use the standard (i.e., the SI) units, for several reasons.
Thanks for the feedback!

Why do astronomers use light years or Astronomical Units to measure distances in space?

Simply put: The distances are too great to measure in standard Earth units. Imagine measuring the length of a flight from London to Singapore in widths of sand instead of kil

What do astronomers use to measure distance?

It depends on the distance they are measuring. For things very very close in space they use kilometers. For things a bit farther away, like planets, they use Astronomical un

Why do astronomers use the astronomical unit to measure distances in the solar system?

Because the inch, foot, meter, kilometer, and mile are all too small, and the light year is too big. All of those produce inconvenient numbers when used to measure distances i

What measuring unit is used to measure the distance from earth to moon?

Any standard unit of length will do, but really it just depends where you live. In the U.S. miles are typically used, in which case the distance is roughly 240 million miles.

What unit of measurement do astronomers use to determine distances from earth to the stars?

The most common is the light year , which is the distance that a beam of light will travel in one year, and is approximately 10 trillion kilometres (or about 6 trillion miles

What unit of measurement do astronomers use when measuring the distance between two stars?

We can calculate the distance between two starts by using "parallax". The method parallax means triangulating the distance using geometry. Using basic geometry you can relate

Why do scientists use the Astronomical units to measure distances in space?

For the same reason that the odometer in your car measures distances in miles ... we choose a unit that gives reasonable numbers for the distances we're measuring. It's m

Why do astronomers use both light years and astronomical units to measure distance?

Astronomical units for closer objects in our solar system, such as other planets, comets and such like and light year for other stars and galaxies which are much, much further