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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
- 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—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
- Star - Formation, Evolution, Lifecycle | Britannica
Star - Formation, Evolution, Lifecycle: Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation
- Stellar evolution - Wikipedia
Stellar evolution is the process by which a star changes over the course of time Depending on the mass of the star, its lifetime can range from a few million years for the most massive to trillions of years for the least massive, which is considerably longer than the current age of the universe
- Star - Simple English Wikipedia, the free encyclopedia
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
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