Why Is the Sun Losing So Much Mass?

The Sun is a marvel to behold. And while there is no denying that the Sun is huge, it is losing an incredible amount of mass all the time. In fact, the combination of solar wind and nuclear fusion results in the loss of 5 million tons of mass every second.

Solar wind is made up of particles such as electrons and protons that are flung off of the Sun at high speeds. With the use of satellites, scientists have been able to discover that approximately 300 million protons are flying around in solar wind every second. And although equal numbers of electrons and protons are shed, protons are made up of far more mass. The Sun sheds an astounding 1.5 million tons every second due to the loss of these protons.

Fusion refers to the process of converting hydrogen atoms into helium. The difference in mass between the two elements is converted into energy and released as light. Due to nuclear fusion, researchers have calculated that the Sun loses around 4 million tons of mass in the form of energy every second.

Yet despite constantly losing so much mass, astronomers maintain that there is no concern about losing our star any time soon. In fact, the Sun has only lost approximately 0.05% of its total mass during its lifetime of 4.5 billion years.

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