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).
As stated earlier though, the year specified in light year is different to the year specified in Earth year. In fact, the year specified in a light year is actually 11 minutes and 31 seconds longer than an Earth year. So, the year in a light year is actually equal to 1.000022 Earth years - a difference of a whooping 0.0022%!