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Rigel
Details
Rigel is the blue-white supergiant that marks Orion’s foot and dominates the constellation’s lower half. Although it looks solitary to the eye, it is actually part of a multiple-star system built around a spectacularly luminous hot primary star.
Rigel is the kind of star that makes the rest of Orion look deliberately arranged around it. It is a blue-white supergiant, bright enough to dominate the lower half of the constellation and hot enough to feel almost severe. To the eye it appears as a single brilliant point, but its true nature is more complex.
Rigel is part of a multiple-star system, which means the light we associate with one star sits inside a broader stellar arrangement. That matters because Rigel is not just luminous; it is also a massive star living fast. Blue supergiants burn through their lives quickly, and Rigel belongs to that short, intense stage where brightness comes with urgency.
That is why Rigel is so compelling. It is a star that looks almost ceremonial in the sky, yet physically it is anything but calm. Rigel turns Orion’s familiar shape into a reminder that some stars achieve their grandeur by burning hot and fast.
38.3million km
Visual creditscaleofspace.org / CC BY-NC 4.0
Key facts
- Category
- Stars
- Object class
- Blue supergiant star
- Mass
- ~21 solar masses
- Temperature
- ~12,000 K surface
- Scale fact
- 103 million kmdiameter
- Estimated age
- ~8 million years
- Composition
- Hydrogen and helium
Scale context
Where Rigel sits on the full axis
By size on the journey, Rigel sits between Polaris Aa and Deneb. The band below uses nearby Stars objects for context.
Shared physical scale
683million km
Together, these objects make the size change around Rigel easy to compare at a glance.
Between the smallest and the largest, perspective is everything.
About
Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.
Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.