Science Questions

  • December 7, 2010   BY Jenny Marder 

    If you expanded an atom to the size of a baseball, what would it look like? And how would the inside look if you sliced it open? The nucleus is the atom’s central core and contains more than 99.9 percent … Continue reading

  • John Eichelberger, a volcano expert with the U.S. Geological Survey
    November 30, 2010   BY Jenny Marder  

    It’s time for our weekly Just Ask feature, where the experts tackle your questions on science and technology. John Eichelberger, a volcano expert with the U.S. Geological Survey, answers the question, “Why Does the Earth Have Volcanoes, and What Makes … Continue reading

  • November 24, 2010   BY Jenny Marder  

    Regarding the expanding universe which recent observations shows is accelerating: I understand that not everything is expanding, just the space between galaxies. Is that correct? If so, why? — Bill Ellena It’s true — not everything is expanding. The earth … Continue reading

  • November 15, 2010   BY Jenny Marder  

    Robert Kirshner, an astrophysicist from the Harvard-Smithsonian Center for Astrophysics, answers the question, “What is a supernova?” A supernova explosion is something where you see a star that you hadn’t seen before suddenly turn billions of times brighter than it … Continue reading

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