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 | Definition, Light, Names, & Facts | Britannica
What is a star? 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.

What is a Star? Types, Life Cycle, and Fascinating Facts
A star is a luminous sphere of plasma held together by gravity. It generates energy through nuclear fusion in its core — a process in which lighter atomic nuclei (typically hydrogen) combine to form heavier nuclei (like helium), releasing immense amounts of energy in the process.

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.

STAR Definition & Meaning - Merriam-Webster
The meaning of STAR is a natural luminous body visible in the sky especially at night. How to use star in a sentence.

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.

Stars | Astronomy.com
In this artist’s rendition, the newly discovered planet is shown as a hot, rocky, geologically-active world glowing in the deep red light of its nearby parent star, the M dwarf Gliese 876.

What is a Star? (article) | Stars | Khan Academy
A star’s mass determines its temperature and luminosity, and how it will live and die. The more massive a star is, the hotter it burns, the faster it uses up its fuel, and the shorter its life is.

Star Facts: The Basics of Star Names and Stellar Evolution
How are stars named? And what happens when they die? These star facts explain the science of the night sky.

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