Linked from
The 17 pages that link to Betelgeuse, each with the reason it gives.
Massive starBroader topic: Its evolution illustrates the expanded, cool phase of a massive star.
OrionBroader topic: Its reddish color and position define one corner of Orion’s familiar outline.
RigelCompared with: Its cool red appearance contrasts with Rigel’s hot blue-white light.
Giant starCompared with: Its much greater scale distinguishes supergiants from ordinary giants.