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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
- 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
- STAR Education
School districts throughout California have contracted STAR to provide tutoring in math, literacy and STEAM education with verified increases in test scores for over 20 years
- What is a Star? (article) | Stars | Khan Academy
Where Do Stars Come From? Every star forms in a huge cloud of gas and dust Over time, gravity causes the cloud to contract, drawing the gas closer and closer together As more gas accumulates at the center, it becomes denser and pressure increases This causes it to heat up and begin to glow
- 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
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