What is star?

  • (noun): (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior.
    See also — Additional definitions below

Star

A star is a massive, luminous sphere of plasma held together by gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on the planet. 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.

Read more about Star.

Some articles on star:

Xi Geminorum
... Xi Geminorum (ξ Gem) is a star in the zodiac constellation Gemini with the traditional name Alzirr ... The star has an apparent visual magnitude of 3.35, which is bright enough for it to be seen with the naked eye ... Alzirr has a stellar classification of F5 IV, which is subgiant star that is in the process of evolving away from the main sequence of stars like the Sun ...
Caelum - Notable Features
... See also List of stars in Caelum Caelum is a faint constellation, having no star brighter than fourth magnitude ... Its brightest star is the magnitude 4.45 α Caeli ... α Cae is a white-hued main sequence star of magnitude 4.4, 66 light-years from Earth ...
Fictional Universe - Scope
... Conan the Cimmerian stories or Lev Grossman's Fillory, are global in scope and some, like Star Wars, Honorverse, or the Lensman series, are galactic or even intergalactic ... The classic Star Trek episode "Mirror, Mirror" introduced the Mirror Universe, in which the crew members of the Starship Enterprise were brutal rather than compassionate ... The 2009 movie Star Trek created an "alternate reality" and freed the Star Trek franchise from continuity issues ...
Data (Star Trek)
... Data ( /ˈdeɪtə/ DAY-tə) is a character in the fictional Star Trek universe portrayed by actor Brent Spiner ... He appears in the television series Star Trek The Next Generation and the feature films Star Trek Generations, Star Trek First Contact, Star Trek Insurrection, and ... in many ways a successor to the original Star Trek's Spock (Leonard Nimoy), in that the character offers an "outsider's" perspective on humanity ...
Star - Nuclear Fusion Reaction Pathways
... different nuclear fusion reactions take place inside the cores of stars, depending upon their mass and composition, as part of stellar nucleosynthesis ... As a result the core temperature of main sequence stars only varies from 4 million kelvin for a small M-class star to 40 million kelvin for a massive O-class star ... reactions occur constantly, producing all the energy necessary to sustain the star's radiation output ...

More definitions of "star":

  • (noun): A plane figure with 5 or more points; often used as an emblem.
  • (noun): An actor who plays a principal role.
    Synonyms: principal, lead
  • (verb): Mark with an asterisk.
    Example: "Linguists star unacceptable sentences"
    Synonyms: asterisk
  • (verb): Feature as the star.
    Example: "The movie stars Dustin Hoffman as an autistic man"
  • (noun): A star-shaped character * used in printing.
    Synonyms: asterisk
  • (noun): A performer who receives prominent billing.
    Synonyms: headliner
  • (verb): Be the star in a performance.
  • (noun): The topology of a network whose components are connected to a hub.
    Synonyms: star topology
  • (noun): Any celestial body visible (as a point of light) from the Earth at night.

Famous quotes containing the word star:

    The obvious parallels between Star Wars and The Wizard of Oz have frequently been noted: in both there is the orphan hero who is raised on a farm by an aunt and uncle and yearns to escape to adventure. Obi-wan Kenobi resembles the Wizard; the loyal, plucky little robot R2D2 is Toto; C3PO is the Tin Man; and Chewbacca is the Cowardly Lion. Darth Vader replaces the Wicked Witch: this is a patriarchy rather than a matriarchy.
    Andrew Gordon, U.S. educator, critic. “The Inescapable Family in American Science Fiction and Fantasy Films,” Journal of Popular Film and Television (Summer 1992)

    I put the gold star up in the front window
    beside the flag. Alterations is what I know
    and what I did: hems, gussets and seams.
    Anne Sexton (1928–1974)

    I would that we were, my beloved, white birds on the foam of the sea!
    We tire of the flame of the meteor, before it can fade and flee;
    And the flame of the blue star of twilight, hung low on the rim of the sky,
    Has awaked in our hearts, my beloved, a sadness that may not die.
    William Butler Yeats (1865–1939)