- 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? (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
- Star - ESA Hubble
A star is an approximately spherical body of plasma, which is held together by its own gravity and prevented from collapsing by the energy generated inside it by the fusion of hydrogen into helium
- Stars - WorldAtlas
As a star approaches the end of its lifespan, it no longer has hydrogen to transform into helium in its core Unable to complete the nuclear fusion process, the star begins to succumb to gravity, slowly collapsing
- What is a Star? - Universe Guide
The simplest way to describe a star is that it is a great ball of fire, but it is more complicated than that A star is a giant ball of hydrogen turning into helium through nuclear fusion
|