What Is a Star?

We’re all pretty familiar with stars, We see themon most clear nights as tiny, twinkling pinpricks of light in the sky, Stars are the topic of countless poems, stories, and nursery rhymes alike, But just what is a star, exactly? A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity, Nuclear fusion reactions i…Where Do Stars Come from?

star

Star, any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources, This article describes the properties and evolution of individual stars, Included in the discussion are the sizes, energetics, temperatures, …

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 billionWhy do stars twinkle?As the light emitted from a star passes through the different layers of Earth’s atmosphere, turbulence causes the starlight to bend, To an observerHow is a star’s brightness measured?Astronomers define stellar brightness in terms of magnitudes: the apparent magnitude the perceived and measured brightness of a star and the absoWhy do stars tend to form in groups?Stars tend to form in groups because of where star formation occurs, Stars form within a molecular cloud, where protostars begin to take shape in aWhy do stars evolve?Stellar evolution occurs when a star loses its energy from continuous nuclear fusion reactions, causing instability due to decreasing gas pressure,

Stars

Star Formation

Star

Overview

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Astronomy,com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes

The Stars

Stars except for the Sun appear as tiny dots in the sky; as their light travels through the many layers of the Earth’s atmosphere, the light of the star is bent refracted many times and in random directions light is bent when it hits a change in density – like a pocket of cold air or hot air, This random refraction results in the star winking out it looks as though the star moves a bit

Astronomy for Kids: Stars

Main Sequence Star – Once a star, it will continue to burn energy and glow for billions of years, This is the state of the star for the majority of its life and is called the “main sequence”, During this time a balance is met between gravity wanting to shrink the star and heat wanting to make it grow bigger, The star will remain this way until it runs out of hydrogen, Red Giant – When the

Tonight

Tonight Brightest Stars Astronomy Essentials Moon Phases Clusters Nebulae Galaxies Favorite Star Patterns Constellations, Tonight, Moon and Mercury November 1, 2 and 3 before sunup, John Jardine

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100 Best Celestial Names Related To Stars, Space, And

100 Best Celestial Names Related To Stars, Space, And Astronomy 1,Alpha Greek Origin meaning ‘the firstborn’, This is also the name of our closest star system, Alpha Centauri, 2,Ariel Hebrew Origin meaning ‘lion of God’, This is a fairly famous name in Disney Movie and books after The Little

Astronomy

Astronomy from Greek: ἀστρονομία, literally meaning the science that studies the laws of the stars is a natural science that studies celestial objects and phenomena,It uses mathematics, physics, and chemistry in order to explain their origin and evolution,Objects of interest include planets, moons, stars, nebulae, galaxies, and comets,

Be stars Atlas

Be, star, CCD, astronomy, spectrograph, Be-star, About the Atlas, The study of the Be stars is a long tradition for French amateurs, since a program was undertaken in 1992 with the 60-centimeter telescope at Pic du Midi by Alain Klotz, Valerie Desnoux, Daniel Bardin and some other volunteers,This pioneer work clearly showed an example of a research program accessible to the amateurs and useful