1 Massage the twitch muscle with your finger for 15 seconds. 2  Usually there are other muscles that twitch like leg cramps, so take 500mg of magnesium citrate capsule daily. 3  If you have headaches, massage the knot at the back of your neck for release.
Â­So to measure really long distances, people use a unit called a light year. Light travels at 186,000 miles per second (300,000 kilometers per second). Therefore, a light second is 186,000 miles (300,000 kilometers).
Best Answer: A light year is a measure of DISTANCE not time. A light year is the DISTANCE light can travel in one earth year. One light year = 9.4605284 Ã 10^12 kilometres or 5.87849981 Ã 10^12 miles. People who talk of light years as a measure of time don't know what they're talking about. Edit: NO we're definitiely NOT saying 1 light year = 1 earth year, how can you interpret that from what we said?