A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Other stars are visible to the naked eye from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth. Historically, the most prominent stars were grouped 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 into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space. Once the hydrogen in the core of a star is nearly exhausted, almost all naturally occurring elements heavier than helium are created by stellar nucleosynthesis during the star's lifetime and, for some stars, by supernova nucleosynthesis when it explodes. Near the end of its life, a star can also contain degenerate matter. Astronomers can determine the mass, age, metallicity (chemical composition), and many other properties of a star by observing its motion through space, luminosity, and spectrum respectively. The total mass of a star is the principal determinant of its evolution and eventual fate. Other characteristics of a star, including diameter and temperature, change over its life, while the star's environment affects its rotation and movement. 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.
To use the chart, analysts plot a scatter graph to rank the business units (or products) on the basis of their relative market shares and growth rates.
Cash cows is where a company has high market share in a slow-growing industry. These units typically generate cash in excess of the amount of cash needed to maintain the business. They are regarded as staid and boring, in a "mature" market, yet corporations value owning them due to their cash generating qualities. They are to be "milked" continuously with as little investment as possible, since such investment would be wasted in an industry with low growth.
The festival's jury will be headed by U.S ... The festival will open with The Composer, a period drama directed by Kazak filmmaker Xirzat Yahup, and close with Bollywood tentpole Zero, starring Shah Rukh Khan... Still, many of the films will be showing in China for the first time at the festival ... End Game — months after its worldwide release) ... .
Mexican star Alvarez, who defeated Julio Cesar Chavez Jnr earlier this month, dropped the 154-pound title as he moves up to the middleweight ranks for a megafight on September 16 against unbeaten Gennady Golovkin for the Kazak star's three world titles ... "I'm very excited to be back and showcase a high level fight for the fans," Cotto said.
The 26-year-old Asian star, runner-up at the 2014 US Open and coming off a fourth consecutive title last month at Memphis, denied the Frenchman on two set points in the ninth game of the second set and took four of the last five points in the tie-breaker to win after 88 minutes.
Pitted against Japanese rival Yuichi Sugita, the Kazak star unexpectedly dropped the first set before winning 4-6, 6-3, 7-6 ... On a day when the star attraction of the meet, Somdev Devvarman, did not take the court, the local interest ...
She might only be 10-years-old, but little SoniaYang can already speak an incredible 10 languages ...Young linguist ... More... Sonia had previously picked up both Kazak and Portuguese for the qualifying rounds of the contest. Star pupil ... Describing her achievement, she said ... "Sonia is a very bright and hard-working girl - definitely a star ... Name.