The most delicate and quickest expiring nuts are pine and pistachio. While our tables list the time frame that nuts are good beyond their printed date, if you can't find any date on your package, you can expect most shelled varieties to last about 2 years. For opened packages, it's best to take a whiff before serving.
Definition of PARSEC. : a unit of measure for interstellar space that is equal to 3.26 light-years and is the distance to an object having a parallax of one second as seen from points separated by one astronomical unit.ADVERTISEMENT.par allax + sec ond. a unit of measure for interstellar space that is equal to 3.26 light-years and is the distance to an object having a parallax of one second as seen from points separated by one astronomical unit. ADVERTISEMENT.
A corollary is that a parsec is also the distance from which a disc one astronomical unit in diameter must be viewed for it to have an angular diameter of one arcsecond (by placing the observer at D and a diameter of the disc on ES).