Sunday, August 7, 2011

soon… (The Stars)

800px-Starsinthesky

Historically, stars have been important to

civilizations throughout the world.

They have been part of religious

practices and used for celestial navigation and orientation.

Stars are formed within extended regions

of higher density in the interstellar medium,

although the density is still lower than the inside of an earthly

vacuum chamber.

When stars form in the present

Milky Way galaxy

they are composed of about 71% hydrogen

and 27% helium,

as measured by mass,

with a small fraction of heavier elements.

en.wikipedia.org

SOON…

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