The purpose of this diet is to keep the levels of electrolytes, minerals, and fluid in your body balanced when you have chronic kidney disease or are on dialysis. People on dialysis need this special diet to limit the buildup of waste products in the body.
Vega is the brightest star in Lyra, and the fifth brightest star in the sky. It is the third brightest star in the Northern night sky, after Sirius and Arcturus, and can often be seen near the zenith in the mid-northern latitudes during the Northern Hemisphere summer.
However, this view is deceptive and illustrates the difference between magnitude and luminosity. Altair is closer to us than Vega, but appears a bit dimmer. That is because Vega puts out more light; it is more luminous. Also, while Altair is 1Â½ times larger than Earth's sun, Vega is more than three times larger.