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Star - Wikipedia A star is a luminous spheroid of plasma held together by self-gravity [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
Star | Definition, Light, Names, Facts | Britannica A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye
Stars - NASA Science A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars
Stars—facts and information | National Geographic 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
What is a star? - Cool Cosmos 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 Stars come in a variety of sizes and colors
STAR在剑桥英语词典中的解释及翻译 - Cambridge Dictionary Thanks for helping me out - you're a star! The teacher says Gracie's been a little star today Dad came to collect me from the airport - he's such a star! He has been amazingly brave throughout his illness - a real star