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Aldebaran or Alpha Tauri is a Orange Giant star of type K5III about 65.2ly from Earth.

All hydrogen fusion has ceased in the core of the star and has moved to a shell surrounding the core. Due to gravitational forces the temperature in the core of the star has greatly increased but is not currently sufficient for Helium fusion. As a result the star has increased in diameter dramatically. With the mass of 1.7 solar masses it has a diameter 44.2 times that of the sun.

As the star matures eventually helium fusion will begin in the core and will become a Red Giant Star.

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15y ago

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