The weekend that was. Graffiti in Brunswick. While the Nightmare in Haiti continues. Stop being ignorant. How? A long lost friend, peppermint tea, and time to catch up. There is a storm brewing. The sound of rain on a corrugated roof. You feel so small. Everything under Orion. Stars millions of light years away.
A light-year or light year (symbol: ly) is a unit of length, equal to just under 10 trillion (i.e. 1013) kilometres. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.[1]
The light-year is often used to measure distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications. The preferred unit in astrometry is the parsec, because it can be more easily derived from, and compared with, observational data. The parsec is defined as the distance at which an object will appear to move one arcsecond of parallax when the observer moves one astronomical unit perpendicular to the line of sight to the observer, and is equal to approximately 3.26 light-years.
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