Alpha Centauri B is the companion star, or secondary, of the binary system, and is slightly smaller and less luminous than the Sun. It is a main-sequence star of spectral type K1 V, making it more an orange color than the primary star.Alpha Centauri B is about 90% the mass of the Sun and 14% smaller in radius.lpha Centauri (Î± Cen), also known as Rigil Kent (/ËraÉªdÊÉl ËkÉnt/) or Toliman, is the closest star system to the Solar System at 4.37 ly (1.34 pc).
A magnetic resonance angiogram (MRA) is a type of magnetic resonance imaging (MRI) scan that uses a magnetic field and pulses of radio wave energy to provide pictures of blood vessels inside the body.
If you or someone you love has had a blood clot, stroke, heart disease, or similar health problem, your doctor may recommend a magnetic resonance angiography (MRA) exam. Similar to magnetic resonance imaging (MRI), an MRA is a test that allows your doctor to view inside the body. More specifically, an MRA helps your doctor review the condition of your blood vessels. The test reveals details that will help your doctor to make an accurate diagnosis of your condition and to determine a customized treatment plan.