Several students observed the star Bellatrix in Orion (visible early in the evening during winter), and were delighted by the link to the Harry Potter series. Bellatrix's radius is R 4010 8 m, and determine its size relative to the Sun's radius. Recall 1 R Sun 710 8 m is the conversion factor. R = ___________________ R Sun 2- The current North Star (Polaris) is in the constellation of Ursa Minor (i.e., the little dipper), and is rather large and designated a supergiant. Polaris' radius is R 21010 8 m, and determine its size relative to the Sun's radius. Recall 1 R Sun 710 8 m is the conversion factor. R = _________________ R Sun 3- The brightest star in the night-sky is Sirius, which is in the constellation of Canis Major (the hunter dog of Orion), and the object becomes visible nearer to sunset as winter progresses. Sirius' radius is R 1510 8 m, and determine its size relative to the Sun's radius. Recall 1 R Sun 710 8 m is the conversion factor. R = _____________________ R Sun 4- The radii for the stars evaluated above (e.g., the North Star) are