Today we will concentrate our efforts on the Northern Hemisphere. You can't miss it. Aldebaran has a magnitude of 0.9 so it is about as bright as Betelgeuse . But I've chosen to leave them out because they involve dimmer stars and no one agrees on how they should be connected anyway. Try to remember that Aldebaran is the orange star in the right eye of the bull and Alnath is the bluish-white star at the tip of his left horn.
Stars are balls of gas with a nuclear furnace at the center.
Eventually that energy reaches the surface of the star and heats it. The starlight that we actually see is really the light given off by the surface of the star. It's important to understand that there is a big difference in the physics between the center and the surface of a star. Energy is created at the star's center. Next month I will tell you all about that physics.