[1] the nearest star to earth is the sun 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. The meaning of star is a natural luminous body visible in the sky especially at night How to use star in a sentence. For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star’s interior and then radiates into outer space. A star is a luminous sphere of plasma held together by gravity It generates energy through nuclear fusion in its core — a process in which lighter atomic nuclei (typically hydrogen) combine to form heavier nuclei (like helium), releasing immense amounts of energy in the process.
But there are different ways a star’s life can end, and its fate depends on how massive the star is.
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