STARS

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.
FPO
Featured

How are stars formed?

Long, long ago, our sun began its life as a mere twinkle in the universe's eye. How did it become the ruler of our solar system?

11-20 of 27
  • How do astronomers detect that a star has a planet orbiting it?

    How do astronomers detect that a star has a planet orbiting it?

    According to an article I read, astronomers are able to detect that star has a planet orbiting it by observing the "wobble" of the star induced by the gravitational pull of one or more planets. At the tremendous distances involved, what is the technology that enables these discoveries? See more »

  • Achernar

    Achernar

    Achernar, a blue-white star in the constellation Eridanus. Achernar has an apparent magnitude of 0.5, making it one of the brightest stars in the nighttime sky. See more »

  • Algol

    Algol

    Algol, a variable star in the constellation Perseus. (A variable star is one that changes in brightness.) Algol, which was observed by the ancient Greeks and named by the Arabs, is now known to be a complex system of at least four stars revolving around one another. See more »

  • Alpha Centauri

    Alpha Centauri

    Alpha Centauri, a system of three stars, one of whose membersProxima Centauriis the star nearest the sun. See more »

  • Altair

    Altair

    Altair, the brightest star in the constellation Aquila. It is the 12th brightest star in the sky, with an apparent magnitude of 0.77. See more »

  • Antares

    Antares

    Antares, the brightest star in the constellation Scorpius. The star has a red color like that of the planet Mars. See more »

  • Arcturus,

    Arcturus,

    Arcturus, the brightest star in the constellation Botes and one of the brightest stars in the night sky. See more »

  • Beta Centauri

    Beta Centauri

    Beta Centauri, or Hadar, one of the brightest stars in the night sky. It is the second brightest star (after Alpha Centauri) in Centaurus, a southern constellation. See more »

  • Betelgeuse

    Betelgeuse

    Betelgeuse, a bright reddish star in the constellation Orion. It is about 495 light-years from the earth, though some measurements put it at about 640 light-years away. See more »

  • Canopus

    Canopus

    Canopus, the second brightest star in the night sky. (Sirius is the brightest.) Canopus is in the constellation Carina. See more »

11-20 of 27
More To Explore
Don't Miss