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Stellar classification - Wikipedia

en.wikipedia.org/wiki/Stellar_classification

In astronomy, stellar classification is the classification of stars based on their spectral ... The sequence has been expanded with classes for other stars and star-like ..... This is essentially th...

What Are The Different Types of Stars? - Universe Today

www.universetoday.com/24299/types-of-stars/

May 18, 2016 ... Stars come in many different sizes, colors, and types, and understanding where they fit in the ... A protostar is what you have before a star forms.

Stars | Science Mission Directorate

science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve

How do stars form and evolve? ... On the other hand, the most massive stars, known as hypergiants, may be 100 or more times more massive than the Sun, and ...

Different Types of Stars in the Universe | Owlcation

owlcation.com/stem/Different-Types-of-Stars-in-the-Universe

Jun 13, 2016 ... Different Types of Stars in the Universe - Physical characteristics and ... They eventually eject their outer layers to form a planetary nebula, ...

Star Classification - Zoom Astronomy - Enchanted Learning

www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml

On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionary stage. This diagram shows that there are 3 very different types of ...

Star Formation - University of Oregon

abyss.uoregon.edu/~js/ast122/lectures/lec13.html

Stars form inside relatively dense concentrations of interstellar gas and dust .... a type of stellar coherence (young stars are found near other young stars) to build ...

Stars - Space.com

www.space.com/57-stars-formation-classification-and-constellations.html

Dec 16, 2014 ... Learn how stars form, how stars and constellations are named, what ... Also, different astronomers over the years have compiled star catalogs that use ... Most consist of an abbreviation that stands for either the type of star or a ...

What are Stars, Really? - Astronomy and Space @ About.com

space.about.com/od/stars/tp/What-Are-The-Different-Types-Of-Stars.htm

This quick primer on stars tells us how they form, how long their life cycles are, ... The simple fact is that the universe is made up of many different types of stars.

Types of Stars - Australia Telescope National Facility

www.atnf.csiro.au/outreach/education/senior/cosmicengine/stars_types.html

Stars form in dense molecular clouds within galaxies. .... A different sequence, the CNO cycle (for carbon-nitrogen-oxygen) dominates in higher mass main ...

Stars - Astronomy For Kids - KidsAstronomy.com

www.kidsastronomy.com/stars.htm

There are several different kinds of stars in the sky. Some are very big. A couple of stars have been found that are 100 to 200 times larger than the sun.