Convert astronomical unit to marathon
Selected category: length.
Definition and details for astronomical unit:
Astronomers use astronomical unit (ua or au or AU) as yardstick for measuring the distances between objects in the Solar System. AU is defined as the distance from the center of the Earth to the center of the Sun. Currently it is accepted that this length is 149 597 870 691 meters, with an uncertainty of about 30 meters.
Definition and details for marathon:
Marathon is a long distance foot race with an official distance of 42.195 kilometers. The name Marathon comes from the legend of Pheidippides, a Greek messenger, who was sent from the battlefield of Marathon to Athens to announce that Greeks won Persians in the battle of Marathon, in which he had just fought. Pheidippides ran the entire distance without stopping and burst into the assembly, exclaiming "ΝΕΝΙΚΗΚΑΜΕΝ" (We have won.) before collapsing and dying.