Disciplines & Professions: Astrophysics

Astrophysics is the part of astronomy that deals principally with the physics of the universe, including luminosity, density, temperature, and the chemical composition of stars, galaxies, and the interstellar medium. (Source: NASA/GSFC - "Imagine the Universe!" Dictionary.)

  • Featured Article

    Space: The Void

    Introduction Following the great intellectual silence of the Dark Ages, the issue of the vacuum and the Void resurfaced once the ancient Greek writings, so carefully kept by Arabic scientists,...

  • Featured Blog Post

    Notes from the Astronomy Underground- Astropalooza

      According to the tagline in Ridley Scott’s 1979 blockbuster Alien, “In space, no one can hear you scream.” It’s true that sound waves, unlike light, need a medium- some kind of...

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PBS - People & Discoveries

What's the story behind electroshock therapy? Who's responsible for increasing the size of the Universe? What laboratory mishap led to the saving of countless lives? The answers to these questions, plus many more, await you in People and...

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Articles

  • Introduction - Hidden Dimensions We take it pretty much for granted that space has 3 dimensions to it, but the...
  • Introduction The words "space", "empty space","vacuum","void" and "nothingness" sound vaguely similar to us, a...
  • Introduction - Descartes Only three years after Kepler's death in 1630, the French philosopher and mathematici...
  • Introduction Today, cosmologists believe that 13.7 billion years ago, there was nothing . No universe no g...
  • A tremendous amount of theoretical work is aimed at unifying the physics of the small (quantum mechanics) with...
  • Introduction The Education and Public Outreach ("E/PO") function is a multi-faceted feature of most scientific...
  • Introduction The introduction of special relativity in 1905 was one of the first steps taken in blending abstr...