The amount of hydrogen in the Sun is related to its core size, being the fuse of hydrogen atoms process the one that speeds up the sun increases. Today the amount of hydrogen and its fuse to make helium in the core is leqading toa 1% of increase in tluminosity every 100 million years, being 600 million tons of hydrogen fuse every second (forming 596 million tons of helium). It is estimated that in 5 billion yearsthe Sun will start to run out of hydrogen and begin to collapse . Therefore, it is estimated that the amount of hydrogen in the Sun is decreasing gradually since the star was born, because that amount is direct related to the core force and shine capacity of the Sun.th