If you fall under one of the following criteria you are eligible to sign up for Medicare: 1  People 65 years of age and older. 2  Some people with disabilities under 65 years of age. 3  People with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant).
Stars that are located high on the y-axis are very luminous, and have a very large diameter. This is the realm of the giants on the H-R diagram. They are massive stars, but it is their great size (some have a radius more than 1 000 times the sun's, which is appr.
She noted that the largest stars are the coolest. So even though Eta Carinae is the most luminous star we know of, itâs extremely hot â 25,000 Kelvin â and so only a mere 250 solar radii. The largest stars will be the cool supergiants. For example, VY Canis Majoris is only 3,500 Kelvin.