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).
Earth's orbit is equal to about 52 minutes of light time travel, so we divide 525,600 minutes a year by our 52 minute light travel time and we get about 10,108 Earth years or orbits around the Sun to equal the distance of a Lightyear! Edit: 1/21/16.