Carlotta Brown
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Jun 17, 2024 · star, 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 composing the observable universe, only a very small percentage are visible to the naked eye. Many stars occur in pairs, multiple systems, or star clusters.
Disney+ Hotstar is Indiaâ s largest premium streaming platform with more than 100,000 hours of drama and movies in 17 languages, and coverage of every major global sporting event.
A star is a luminous spheroid of plasma held together by self-gravity. 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.
Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun. Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements.
The universe’s stars range in brightness, size, color, and behavior. Some types change into others very quickly, while others stay relatively unchanged over trillions of years.
Mar 20, 2019 · A star is born. The life cycle of a star spans billions of years. As a general rule, the more massive the star, the shorter its life span.
Sep 26, 2022 · How are stars named? And what happens when they die? These star facts explain the science of the night sky.
Jul 15, 2014 · A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth.
The energy produced by stars moves ( radiates) away from them. Much of the energy leaves as light, and the rest leaves as other kinds of electromagnetic radiation . When a star like the Sun gets old, it will expand in size and become a red giant star. That will happen in about 5 billion years.
