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.
The researchers, in South Africa and Japan, discovered five stars known as Cepheids shining on the opposite side of the Milky Way's disk, 72,000 to 99,000 light-years from Earth. All five stars lie behind the galactic center, which is in the constellation Sagittarius about 27,000 light-years from us.