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Which is the biggest star known by radius?
SpaceStars
Quick Answer
UY Scuti is often cited as one of the largest known stars by radius. Estimates place its radius at roughly 1,700 times that of the Sun, though exact size is uncertain.
The Full Story
UY Scuti is a red supergiant star in the constellation Scutum and is frequently listed among the largest known stars by radius. Its size estimates vary, but a commonly cited value is around 1,700 solar radii, making it vastly larger than the Sun. Because such stars are difficult to measure accurately, the record can change as observations improve. Its enormous scale helps show just how extreme stars can become near the end of their lives.
Key Facts
1.Estimated radius: about 1,700 times the Sun's
2.Type: red supergiant
3.Located in the constellation Scutum
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Suggested video title for this topic:
"A star so huge it would swallow the inner Solar System!"