Okay, that was more than three, but you get the point. A supernova is more significant than a nova, but less so than a hypernova. Supernovae are very bright and generate bursts of radiation that can briefly outshine a whole galaxy before declining in brightness over many weeks or months.n this period a supernova can emit as much energy as the Sun might over its entire lifetime. How Supernovae are Studied. By using optical telescopes, astronomers can approximate the amount of light generated by a supernova.
Cramps or spasms in the muscles often have no clear cause. Possible causes of hand or foot spasms include: 1  Abnormal levels of electrolytes or minerals in the body. 2  Brain disorders, such as Parkinson disease, multiple sclerosis, dystonia, and Huntington disease.  Chronic kidney disease and dialysis.
Slow and gentle stretching of the hand or foot to ease the contracting muscle is the best way to stop this kind of cramp. Brand X Pictures/Brand X Pictures/Getty Images. If you have low levels of certain nutrients in your body, this can cause hand and foot cramps. If you have reduced levels of calcium and magnesium, that can bring on cramping. Lack of vitamin D can cause muscle spasms and cramps in your hands and feet.