Scale insight
Scale Comparison
The Sun vs Rigel, to scale
Rigel is a blue supergiant, so the point is not merely that it is brighter than the Sun. On a true diameter scale, it shows how far stellar size can expand while the star still remains in a hot, massive, blue regime rather than a red swollen one.
Rigel does not represent a cool red giant envelope. It shows that even hot, luminous massive stars can already expand far beyond the Sun's familiar scale.
That makes Rigel a different kind of reset. It is not just stellar bigness, but a reminder that the upper end of the stellar sequence includes multiple routes to enormous size.
Objects
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The Sun is the star at the center of the Solar System and the engine behind every climate and orbit within it. It fuses about 600 million metric tons of hydrogen each second, while photons created in the core can take roughly 250,000 years to work their way to the visible surface.
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.
Visual creditscaleofspace.org / CC BY-NC 4.0
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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.