• What is Dark Matter?

    Dark matter: it sounds like a sinister creation in a science fiction novel, but it’s probably much more real than that. Most scientists believe that dark matter accounts for over 80% of all matter in the universe. Researchers don’t...
    By Megan Nichols March 24, 2016 

  • Previous Theories and the Ultimate Cause of the Pioneer Anomaly

    The Pioneer anomaly, a subtle but unexpected deceleration observed on many unmanned spacecraft, puzzled scientists for decades. Here's an overview of what the Pioneer anomaly is, some of the explanations previously proposed for its existence, as well...
    By allychevalier January 23, 2013 

  • The Monk who Believed in Aliens

    Giordano Bruno was a monk on a mission. He believed life existed outside of the Earth, that the sun wasn't the center of the Universe, and that the Virgin Mary wasn't a virgin. The Church fried him for such beliefs, and now there's a crater...
    By Arlene McKanic October 27, 2011 

  • Panspermia and the Origin of Life on Earth

    Where did life on Earth originate? Did it form directly on our world billions of years ago? Or instead, was it an accidental gift from amongst the stars, reaching our planet on star dust?
    By Rod Martin, Jr. October 18, 2011 

  • The Shape of the Universe and Human Perception

    How does our inability to perceive reality completely impact our perception of the shape of the universe?
    By Dr. Crystal Cooper August 27, 2011 

  • Elementary Particles of the Standard Model

    The Standard Model of physics includes 12 fermions, 12 gauge bosons, and the Higgs boson. It's a combination of quantum chromodynamics and the electroweak theory with the addition of the Higgs mechanism. All it needs now is gravity.
    By Kayar August 8, 2011 

  • The Ptolemaic System of Understanding the Universe

    Sometimes, ideas hold great power and Claudius Ptolemy's second century treatise on astronomy was a big hit with civilization for over a thousand years. It was complex, but it solved a lot of problems. As science matured, civilization found it could...
    By Rod Martin, Jr. August 8, 2011 

  • The Four Forces of Physics

    According to physics, there are four basic forces in the Universe: gravity, electromagnetism, the strong force, and the weak force. To learn more about them, we must look at them from a particle physics perspective.
    By Kayar August 7, 2011 

  • How Big Are the Largest Black Holes and How Do Astronomers Detect Them?

    Much remains to be learned about black holes, though experts are trying their best to understand them. One area of interest is the search for the biggest black hole in the Universe.
    By Wendy A.M. Prosser August 7, 2011 

  • What is Cosmology?

    Cosmology is the study of the Universe and man's place within it. Human existence is intertwined with the understanding and existence of the Universe. Cosmology attempts to analyze this connection between what we know to be true and what we believe...
    By Jason C. Chavis July 30, 2011 
showing 1-10 of 64 < Previous   |   page: 1   2   3   4   5  ...   |   Next >