[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. The amount of material in a star (its mass) is so huge that a nuclear reaction called nuclear fusion goes on inside it This reaction changes hydrogen to helium and gives off heat.
Star magazine | celebrity news, exclusives, photos and videos 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.
But there are different ways a star’s life can end, and its fate depends on how massive the star is. In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky But that’s not terribly satisfying in either lexicological or physical terms. Life cycle of a star what is a star A star is a giant sphere of extremely hot, luminous gas (mostly hydrogen and helium) held together by gravity Stars are essentially the building blocks of galaxies and are the source of all the heavier elements.
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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