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What unit do astronomers usually use to measure distances in the solar system and how is it abbreviated?
Wiki User
∙ 13y ago
Distances within the solar system are usually reported in kilometers or AUs.
1 AU = average distance of Earth from the Sun, about 150 million kilometers (149,597,871 km).
- Nearby . . . miles or kilometers
- Out past that . . . AU (Astronomical Units)
- Out past that . . . Light Years
- Out past that . . . Parsecs
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoFor measuring large distance, mainly the unit "parsec" is used, which is "parallax per second". A parsec is about 3.26 light years. For smaller distances, the unit "light years" is used. It is the distance travelled by light in one year. In common publications for the public, the "light years" term is much more frequently used, because the population has become used to it, and grasps the basic concept behind it pretty well. But amongst themselves, astronomers use the "parsec" unit much more commonly.
Wiki User
∙ 12y agoParsecs. In popular astronomy, the light-year is also used a lot. A light-year is the distance light travels in a year; a parsec is about 3.26 light-years.
Wiki User
∙ 13y agoAstronomical Units
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