- published: 21 May 2016
- views: 6080
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible from Earth during the night, when they are not obscured by atmospheric phenomena, appearing as a multitude of fixed luminous points because of their immense distance. Historically, the most prominent stars on the celestial sphere were grouped together into constellations and asterisms, and the brightest stars gained proper names. Extensive catalogues of stars have been assembled by astronomers, which provide standardized star designations.
For at least a portion of its life, a star shines due to thermonuclear fusion of hydrogen in its core releasing energy that traverses the star's interior and then radiates into outer space. Almost all naturally occurring elements heavier than helium were created by stars, either via stellar nucleosynthesis during their lifetimes or by supernova nucleosynthesis when stars explode. Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star are determined by its evolutionary history, including diameter, rotation, movement and temperature. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung–Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.
she's a smile a comedy
a little marylin parody
she's got a ch-ch-trance
she's got that certain glance....that says romance.
It's so easy to believe
that she's gonna' be a movie queen
she's got a big screen test
she's gonna' outdo all the rest.....she's at her best.
cause she's got all the sense
she'll never second guess
she's not too little my little cuisinette.
when she cries it's a tragedy
she cries for broken hearts and broken dreams
all the boys that she had to drop
all the tears that I had to stop......just to be at the
top....blah!
cause she's got all the best
she's never like the rest
she's not too little my little cuisinette.
goodbye my little cuisinette