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Two Questions

  1. Feb 5, 2008 #1
    Ok two questions for all u smart people out there:

    1. What is the difference between a pulsar and a brown dwarf? are brown dwarves just dead white dwarves?

    2. M45. A cluster of blue giants in the sky. Are they actually close relative to each other like our sun and Sirius or Alpha Centauri, or is it just a coincidence they appear like that in the night sky?
     
  2. jcsd
  3. Feb 6, 2008 #2
    A pulsar is a type of neutron star that is formed after a massive star goes supernova. A brown dwarf is planet several times the size of Jupiter that isn't quite massive enough to create nuclear fusion in its core.
     
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