Cosmology

  • Gamma Ray Bursts

    Gamma Ray Bursts (GRB) are the most energetic events in the universe. Lasting for a few milliseconds to a few minutes, they are a hundred times as bright as a supernova. GRBs are almost certainly the most interesting astronomical phenomena discovered...
    By informationishere April 5, 2011 

  • A Look at Planetesimal Theory and Planet Formation

    The Planetesimal theory is a theory of planet formation. We will explore what planetesimals are, what the theory states, the various factors that are taken into account, such as turbulence, what binary planetesimals are and the current state of planetesimals
    By Nick Oza March 16, 2011 

  • Hubbble Finds Farthest and Oldest Galaxy

    The Hubble Space Telescope has imaged the farthest galaxy yet seen. It is 13.2 billion light years away. That means it is 13.2 billion years old. It was being formed less than 500 million years after the Big Bang.
    By George Adcock February 19, 2011 


  • Explaining Expanding Universe Theory

    According to current cosmological theories, the Universe has been expanding since the instant of the Big Bang. But what causes this expansion, and how long will it last? This article gives a brief explanation of expanding Universe theory, from the...
    By Wendy A.M. Prosser January 26, 2011 

  • Sterile Neutrinos: Are They Dark Matter?

    Physicists believe they may have found the culprit that produces the phenomena we ascribe to Dark Matter. It’s not proven yet, but the evidence is growing. The culprit is a fourth type of neutrino. This fourth is called a ‘sterile neutrino’...
    By George Adcock January 23, 2011 

  • CERN Recreates Big Bang

    In a landmark experiment at CERN with the Large Hadron Collider, scientists have recreated conditions that existed just nanoseconds after the big bang. Using heavy lead ions rather than light hydrogen ions, the results offered some surprises, and put...
    By George Adcock December 28, 2010 


  • How Are Galaxies Formed?

    How galaxies are formed is not clearly understood, though various theories have been proposed. Following the formation of the first galaxies, early in the Universe's history, mergers and interactions are thought to have played a major role in the...
    By Wendy A.M. Prosser November 28, 2010 

  • Theories about the Black Hole

    This article explores the mysterious black hole theories and what characteristics each concept possesses.
    By pms19650 November 16, 2010 

  • What is a Quark Star?

    Recently, scientists have hypothesized the existence of a new and fundamentally different type of star. The quark star exists somewhere between the neutron star and the black hole.
    By Andy Dziuba October 29, 2010 

  • Hot or Cold Dark Matter and Cosmology

    Hot and cold dark matter are the two key elements in modern cosmology’s quest to understand how our universe formed as we see it today. Much effort is being expended to determine whether 23% of the universe, which is attributed to dark matter...
    By RC Davison October 28, 2010 
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