Stars are celestial bodies made up of hot gases. Stars radiate energy that comes form thermonuclear reactions. In this section you will learn all about stars and their importance in the universe.


How a Supernova Works

A dying star can explode with the force of a few octillion nuclear bombs and create any element in the universe. But why do stars go supernova?

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  • Castor and Pollux
    Castor and Pollux

    Castor and Pollux, in Greek and Roman legend, sons of the Spartan queen Leda. One legend says they were twins, and that Zeus was their father. See more »

  • Mira

    Mira, a reddish variable star of Cetus, the Whale, a constellation on the celestial equator. See more »

  • North Star
    North Star

    North Star, or Pole Star, a bright star near the north celestial pole (the point in the sky toward which the northern end of the earth's axis points). See more »

  • Procyon

    Procyon, the brightest star in the constellation Canis Minor (Little Dog) and one of the brightest stars in the night sky. See more »

  • Regulus

    Regulus, the brightest star in the constellation Leo. It is also called Alpha Leonis and Cor Leonis. See more »

  • Rigel

    Rigel, or Beta Orionis, a bright star in the southwest corner of the constellation Orion. See more »

  • Sirius

    Sirius, the brightest star in the night sky. It is called the Dog Star, being the chief star of the constellation Canis Major (great dog). See more »

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