
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 …
Star | Definition, Light, Names, & Facts | Britannica
Dec 20, 2025 · 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 …
Support Team Assisted Response (STAR) Program - Denver
The Support Team Assisted Response (STAR) Program is an alternative response team that includes behavioral health clinicians and paramedics to engage individuals experiencing …
Stars - NASA Science
May 2, 2025 · Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a few million to …
What Is a Star and How Does It Work? - ThoughtCo
May 8, 2025 · 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.
What is a Star? Types, Life Cycle, and Fascinating Facts
May 3, 2025 · 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 …
What are stars? - BBC Sky at Night Magazine
Jun 3, 2025 · Within each system, the star sits at the centre, providing heat and light that shapes and characterises the planets and other bodies in orbit around it. That light may even be the …
Stars | Astronomy.com
Nov 20, 2025 · Our home galaxy hosts hundreds of billions of stars orbited by countless worlds. Located 12 million light-years away, M82 appears high in the northern spring sky in the …
Star – Definition & Detailed Explanation - Sentinel Mission
Oct 22, 2025 · There are different types of stars based on their size, temperature, and color. The most common types of stars include: 1. Red Dwarf Stars: These are the smallest and coolest …
Stars - WorldAtlas
Sep 21, 2024 · Stars are massive, luminous spheres of gas, mainly composed of hydrogen, with smaller amounts of helium and other elements. The lifespan of a star varies widely, generally …