Facts about Rigel

1. 07

   Rigel's binary companion, a blue-white B-type star, is roughly 140 times fainter than the primary star despite being relatively massive itself.

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2. 06

   In 1888, astronomer Hermann Carl Vogel detected Rigel's binary companion star through spectroscopy, revealing it orbits approximately every 65 days.

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3. 05

   Approximately 2,000 years ago, ancient Greek astronomers designated Rigel as Beta Orionis because they mistakenly believed Betelgeuse was the brighter star in the Orion constellation.

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4. 04

   Rigel's radius spans approximately 74 times that of our Sun, making it large enough to contain roughly 405 million Earths within its volume.

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5. 03

   Rigel's surface temperature reaches approximately 11,000 Kelvin, making it roughly twice as hot as our Sun's surface.

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6. 02

   At approximately 11 solar masses, Rigel is a blue supergiant star nearing the end of its life cycle and will eventually explode as a supernova.

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7. 01

   The brightest star in Orion, Rigel, is approximately 860 light-years from Earth and shines with a luminosity 120,000 times greater than our Sun.

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