how many miles are there in 1astronomical unit ?

Answer 1

150 million kilometres or 93 million miles in round figures for easy calculations.

CONVERSION FACTORS

1 AU = 149 597 870.691 ± 0.030 km
≈ 92 955 807 miles
≈ 8.317 light minutes
≈ 499 light-seconds

Originally, the AU was defined as the length of the semimajor axis of the Earth's elliptical orbit.

In 1976, the International Astronomical Union revised the definition of the AU for greater precision, defining it as the distance from the centre of the Sun at which a particle of negligible mass, in an unperturbed circular orbit, would have an orbital period of 365.2568983 days (one Gaussian year).

Answer 2

93 million miles equals 1 Astronomical Unit (1 AU).

An AU is the average distance from the Earth to Sol.

Answer 3

an Astronomical Unit the distance between the Earth and the Sun ? 1 A.U=149 790 000 km or 92 870 000 miles.

Answer 4

1 AU is the nominal distance between the Sun and the Earth: 149 597 870 691 ± 30 metres

http://en.wikipedia.org/wiki/Astronomical_unit

Answer 5

Something like 92,955,887.6 miles

93 million rounds it off nicely :)

This also is the average distance from Earth to the Sun.

Answer 6

1 astronomical unit= 1 light year
light travels 186,000 miles per second. in a year there are 31536000 seconds. thus if you multiply the speed of light in one second with the number of seconds in a year your answer is 5865696000000 miles in a year. therefore in 1 astronomical unit there are 5865696000000 miles.