Arcturus
Arcturus, Alpha Boötis (α Boo), is a giant star of the spectral type K0 III located in the northern constellation Boötes. It is the brightest… Read More »Arcturus
Arcturus, Alpha Boötis (α Boo), is a giant star of the spectral type K0 III located in the northern constellation Boötes. It is the brightest… Read More »Arcturus