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.
NEW YORK (AP) — Atlanta Braves star RonaldAcuña Jr ... Leading off the game, Acuña was drilled with an 0-2 pitch ... ___. AP MLB. https.//apnews.com/hub/mlb and https.//twitter.com/AP_Sports. Credit. AP ... AP ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... Braves star Ronald Acuña Jr ... Braves star Ronald Acuña Jr.
NEW YORK – Braves outfielder RonaldAcuña Jr ... And the further imaging also revealed that there is no fracture ... They took two of three in New York, and they hope they don’t lose one of their stars for any amount of time ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... ‘Mini all-star break in April’ ... ....
BOSTON (AP) — James Harden was asked for most of this season to be a facilitator for a 76ers team built around big man Joel Embiid ... He happily obliged ... That’s how we felt.” ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... No, a bionic bordello isn’t coming to rural Georgia ... Braves star RonaldAcuña Jr.
“It's very cool. It's very cool. Growing up as a kid you see professional athletes and movie stars on billboards like that; kind of cool for me to be there myself.” ... ___ ... ___ ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... No, a bionic bordello isn’t coming to rural Georgia ... Braves star RonaldAcuña Jr.
TOKYO (AP) — Global shares were trading mixed Tuesday with some markets closed or anticipating holidays and investors showing muted reaction to the latest U.S. banking failure ...U.S ...Credit. AP. Credit ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... Braves star RonaldAcuña Jr ... Braves star Ronald Acuña Jr.
First Republic Bank has become the second large regional bank with assets over $200 billion to fail in just a few weeks ... Here are some things to know about the collapse of First Republic Bank ... AP ... Stars and styles from tonight's Met Gala ... No, a bionic bordello isn’t coming to rural Georgia ... Braves star RonaldAcuña Jr ... Braves star Ronald Acuña Jr.
Last week she revealed that she was the new star of Valentino’s Rockstud bag campaign ... The WNBA star used that influence on the carpet at the Met Gala to talk about helping support families working to free Americans jailed in foreign prisons through the organization Bring Our FamiliesHome, dressed in Calvin Klein and alongside her wife.