Multiple choice general knowledge science & technology The Sun loses up to a billion kilograms a ....... due to solar winds minuite hour second Day Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Sun loses approximately 1.3 to 1.9 million tons (1.3-1.9 billion kilograms) of mass every second due to solar wind and nuclear fusion converting mass to energy. This continuous mass loss is a fundamental process in stellar evolution.