What is the biggest star known to man?
Estimates put the star VY Canis Majoris between 1400 and 2000 times our sun's diameter. It's a red hypergiant 3900 light-years away. Other stars, like Westerlund 1-26 and KY Cygni may be larger but we're not sure. Measuring stars is hard because they change in size and don't have a solid surface.
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE