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The Question

(Submitted April 21, 1998)

What is the largest known star and how big is it in relation to our Sun.

The Answer

The largest known star (in terms of mass and brightness) is in the Pistol Nebula. It is believed to be 100 times as massive as our Sun, and 10,000,000 times as bright. http://antwrp.gsfc.nasa.gov/apod/ap971008.html

David Palmer for Ask a High-Energy Astronomer

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