Deep in the core of the Sun, 620 million metric tons of

Last updated: 8/9/2022

Deep in the core of the Sun, 620 million metric tons of hydrogen nuclei are converted into 616 million metric tons of helium nuclei every second. What happens to the "missing mass" in the Sun's core? The "missing mass" is converted to heat during an exothermic chemical reaction that produces a new chemical species. The "missing mass" is transformed into energy in a fission reaction. The "missing mass" is transformed into energy in a fusion reaction. The "missing mass" is converted to heat during an endothermic chemical reaction that produces a new chemical species.