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Astronomy & Cosmology

  1. Feb 22, 2005 #1
    What is the difference?
  2. jcsd
  3. Feb 22, 2005 #2


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    Astronomy, both observational and theoretical (and now also experimental!) is about what is going on in the universe that we can see now, or extrapolate to short times (~a billion years) in the past or future.

    Cosmology, is about how the universe developed, and how we can infer that from the data provided by astronomy.
  4. Feb 22, 2005 #3


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    Observational Cosmology = Astronomy on the largest possible scale.
    "On the inside looking out"

    Theoretical Cosmology = Modelling the universe as a whole.
    "On the outside looking in"

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