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- Beta Orionis, "Rigel", is a
- "supergiant", and the 7th brightest
- star in the sky. It has luminosity in
- the area of 57,000 times the sun,
- making it one of the most luminous
- known stars in the galaxy. Were the
- star the same distance as Sirius (8
- light years, vs. 900 light years), it
- would blaze away at a magnitude of -10!
- Rigel is a double star with a 6.7
- magnitude companion easily visible in
- a small telescope.
-