Hence, a menstrual period is the shedding of the uterus lining. The duration of a menstrual period on the average is between three to five days. As such, a period that lasts between two to seven days is considered normal. The amount of blood lost in each cycle is measured between four to twelve teaspoons.
Not surprisingly, UY Scuti is classified as a hypergiant star â which is the classification which comes after supergiant and regular giant. Its size may make it the biggest, but it is not the most massive star (where the mass in massive stands for the amount of matter in the star).
The biggest known by mass is R136a1 : see List of most massive stars. The largest known by volume is UY Scuti : see List of largest stars. R136a1 is in the nearby Large Magellanic Cloud , where it is also relatively easy to see things and be certain of their distance. UY Scuti is a mere 9,500 light-years away: our own galaxy is at least 100,000 light-years across.