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Plz explain this for me

  1. Dec 8, 2004 #1
    hi,i'm a first year student that undergoing an astrophysics and cosmology course in university currently.i'm quite understand the luminosity and magniude of a star.can anybody help me to understand it?THANKS for your generasity.
  2. jcsd
  3. Dec 8, 2004 #2


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    Luminosity is the absolute brightness of a star whereas magnitude is the apparent brightness of a star to a fixed observer [earth being the nearest popular fixed location]. The absolute and apparent brightness are the same when the star in question is viewed from a distance of 10 parsecs. For more info see
    Last edited by a moderator: Apr 21, 2017
  4. Dec 12, 2004 #3
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