i dont know what is LIGHT YEAR AWAY
A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year.
The SR-71 Blackbird is one of the fastest airplanes ever built. It flies at over 3 times the speed of sound, or about 2,300 miles per hour (1020 M/s or 3700 kph). It would take the Blackbird around 290 THOUSAND years to fly one light year or just over 1 MILLION years to fly to Proxima Centauri, the nearest star to our planet. The fastest spacecraft we have ever sent on a tour of the heavens (Helios 1 and 2 were faster but they just spin around the sun) was Voyager 1 which is still out there flying off at 38,600 miles/hour. It would take Voyager over 17 thousand years to travel one light year or over 72,000 years to make it to Proxima. Do you get it now? Space is HUGE!
A light year is a measure of distance, not time. Light travels at 186,000 miles per second. A Light Year is the distance that it would travel in one year.
One light year is the distance that light travels in one year (365 days). The speed of light is constant whether it is traveling through a vacuum or or an atmosphere, about 300,000 km per second. Therefore a light year is a (very large) constant distance that has nothing to do with where you are standing and what you are measuring.
