Many other stars are visible to the naked eye at night Their immense distances from earth make them appear as fixed points of light. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye. How does a star work How do they form, live, and eventually die Learn more about these distant objects and their major importance in the universe.
These large, swelling stars are known as red giants But there are different ways a star’s life can end, and its fate depends on how massive the star is. A star is a huge sphere of very hot, glowing gas Stars produce their own light and energy by a process called nuclear fusion Fusion happens when lighter elements are forced to become heavier elements When this happens, a tremendous amount of energy is created causing the star to heat up and shine
The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that A star is a giant ball of hydrogen turning into helium through nuclear fusion. Our sun is a yellow dwarf star, with a temperature of about 5,500 degrees celsius Of the tens of billions of trillions of stars composing the observable universe, only a very small percentage are visible to the naked eye Many stars occur in pairs, Throughout the milky way galaxy (and even near the sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation.
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