Many other stars are visible to the naked eye at night Their immense distances from earth make them appear as fixed points of light. The meaning of star is a natural luminous body visible in the sky especially at night How to use star in a sentence. 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.
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. 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. In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky
Within each system, the star sits at the centre, providing heat and light that shapes and characterises the planets and other bodies in orbit around it That light may even be the basis for life on some of those worlds, like the sun in our solar system. 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.
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