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What is the biggest star in the universe?

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The largest star that we know of is called VY Canis Majoris it's a long way from Earth between 3,900 and 5,000 light years. It's so big if it was the Sun in our solar system its surface would extend past Jupiter.Jan 18, 2013 read more

As she explained when contacted, the largest stars in the Universe are the coolest. So even though Eta Carinae is the most luminous star we know of, it’s extremely hot – 25,000 Kelvin – and therefore only 250 solar radii big. The largest stars, in contrast, will be cool supergiants. read more

The A in the star's name is assigned to the largest of the pair, and it's now known as one of the largest such stars in the Milky Way. Mu Cephei Artist's conception of what Mu Cephei might look like. read more

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