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Astronomy

  • Nothing But the Facts About the Big Dipper (Ursa Major)

    Although the Big Dipper and Ursa Major are used synonymously much of the time, there is a difference: The Big Dipper is a popular name for an asterism in Ursa Major, Ursa Major being an official constellation, and the third largest. Both are part of mythologies worldwide.
    Published by slight_underweft (1296 pts) on Sep 14, 2009 to
    Space Articles

  • What is a Spectrum, Spectra and Spectrograph? How are They Used in Astronomy?

    Ever wonder what a spectrum is? How about a spectrograph? Read on to learn about spectrums and spectrographs and how scientists use them to study stars and their characteristics.
    Published by rojarose (2056 pts) on Sep 14, 2009 to
    Space Articles

  • Tools Used in Celestial Navigation and its History

    Humans have been using the Sun, Moon, and stars to get around the planet ever since they started traveling. Find out what tools have been used throughout the history of celestial navigation and who invented them.
    Published by S.L. Bradish (597 pts) on Sep 12, 2009 to
    Space Articles

  • Astronomy Lessons for Children

    Many parents prefer to educate their children at home these days. But how can you teach astronomy if you aren't an astronomer?
    Published by S.L. Bradish (597 pts) on Sep 12, 2009 to
    Space Articles

  • How Galaxies Form and Grow

    About 300,000 years after the Big Bang, the universe consisted primarily of hydrogen atoms, Cold Dark Matter (CDM) and baryons. Shock waves from the Big Bang still reverberated through this mix, and caused it to form clumps. The clumps would eventually form galaxies.
    Published by George Adcock (3791 pts) on Sep 12, 2009 to
    Space Articles

  • How to Safely Observe a Solar Eclipse

    Have you ever experienced total darkness in a broad daylight? Well chances are, that phenomenon is an eclipse. And I don’t think it would seem the end of the world if millions of people are eager to watch such a magnificent event and be amazed.
    Published by phoenixwriter (842 pts) on Sep 10, 2009 to
    Space Articles

  • The Search for Extrasolar Planets

    Once relegated to the pages of science fiction novels and movies, we now have proof that planets beyond our solar system exist. More are detected each year, and as technology improves, the numbers radically increase. Might we find another planet Earth someday?
    Published by LynneWilliam (104 pts) on Sep 10, 2009 to
    Space Articles

  • What Is Astronomy?

    Astronomy is the study of the universe but it encompasses so much more. Here we will explain to you what it is and the additional science that helps us understand it.
    Published by Victoria Trix (11062 pts) on Sep 9, 2009 to
    Space Articles

  • Magnitude and How It Works

    The brightness of a space object determines its magnitude. But there are different kinds of magnitudes and one is able to get different pieces of information from them.
    Published by George Garza (1900 pts) on Sep 9, 2009 to
    Space Articles

  • NEO Target: Earth: NASA Agency Tracks Potentially Hazardous Asteroids

    NASA's Near-Earth Object Program works to find and track asteroids and comets whose orbits bring them close to our planet, creating the possible risk of an impact.
    Published by ebishirl (1545 pts) on Sep 9, 2009 to
    Space Articles
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