Question: how much does the biggest star weigh?
Answer: The most massive star in the Milky Way Most of the most massive stars known to date lie in the Large Magellanic Cloud, a satellite galaxy to the Milky Way. However, the Milky Way has its own contenders. The star HD 15558-A weighs in at 152 solar masses. It is an O-type giant star with a smaller O-type companion star.