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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 The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names Astronomers have
Star | Definition, Light, Names, Facts | Britannica Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources This article describes the properties and evolution of individual stars Included in the discussion are the sizes, energetics, temperatures, masses, and chemical compositions of stars
What Is a Star and How Does It Work? - ThoughtCo 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
Stars - NASA Science Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements Every star has its own life cycle, ranging from a few million to
What Is a Star? | Scientific American I love simple questions that wind up having complicated—or at least not straightforward—answers Astronomers twist themselves into knots, for example, trying to define what a planet is, even
What is a star? | Space It's easy enough to say what a star is: one of those bright pointy things that twinkle in the night sky But the actual definition of a star is as rich and colorful as the stars themselves
What is a star? - Cool Cosmos What is a star? | Cool CosmosA 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 Our Sun is an
StarChild: Stars - NASA A star is a brilliantly glowing sphere of hot gas whose energy is produced by an internal nuclear fusion process Stars are contained in galaxies A galaxy contains not only stars, but clouds of gas and dust These clouds are called nebulae, and it is in a nebula where stars are born In the nebula is hydrogen gas which is pulled together by gravity and starts to spin faster Over millions of
Star - Simple English Wikipedia, the free encyclopedia Reconstructed view of the surface of the star Antares in the constellation of Scorpius A star-forming region in the Large Magellanic Cloud NASA ESA image The open star cluster Pismis 24 is in the nebula NGC 6357 It has some of the largest stars known Pismis 24-1 has nearly 300 times the mass of the Sun It is a multiple system of at least three stars The strange shapes taken by the