Anchoring Starlight 2

Anchoring Starlight: Betelgeuse

Astronomy Betelgeuse (pronounced BETL–jooz), currently the brightest star in the constellation of Orion the Hunter, is about 640 light years away.  Currently – because this huge star (also known as Alpha Orionis), is a red supergiant that fluctuates between 300 and 400 times or more the diameter of the Sun, so that around 1850 it was …

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Anchoring Starlight: Arcturus

Arcturus is the fourth-brightest star in the sky. Its diameter is about 27 times that of the Sun, but its mass is similar. It is thought that several billion years from now our Sun will become like Arcturus. It lies 36 light years away in the constellation of Bootes, the Herdsman. Arcturus means bear-guard, for …

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