In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.
Because of the speed at which the earth and the moon move relative to the sun, a total solar eclipse can never last more than how long?
What is the name given to a cataclysmic nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star?
Which is the lowest layer of the Sun, visible to us when we look at it ?