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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 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
Stars - NASA Science Astronomers call stars that are stably undergoing nuclear fusion of hydrogen into helium main sequence star s This is the longest phase of a star’s life The star’s luminosity, size, and temperature will slowly change over millions or billions of years during this phase
100,000 Stars An interactive 3D visualization of the stellar neighborhood, including over 100,000 nearby stars Created for the Google Chrome web browser
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