Notices
Results 1 to 10 of 10

Thread: our galaxy

  1. #1 our galaxy 
    Forum Freshman
    Join Date
    Jun 2008
    Location
    elko nv
    Posts
    36
    what's outside of the milkyway


    Reply With Quote  
     

  2.  
     

  3. #2  
    Forum Professor
    Join Date
    Apr 2007
    Location
    In the circuitous haze of my mind
    Posts
    1,028
    stuff


    Of all the wonders in the universe, none is likely more fascinating and complicated than human nature.

    "Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."

    "Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence"

    -Einstein

    http://boinc.berkeley.edu/download.php

    Use your computing strength for science!
    Reply With Quote  
     

  4. #3  
    WYSIWYG Moderator marnixR's Avatar
    Join Date
    Apr 2007
    Location
    Cardiff, Wales
    Posts
    5,810
    other galaxies, interstellar clouds + lots of empty space
    "Reality is that which, when you stop believing in it, doesn't go away." (Philip K. Dick)
    Reply With Quote  
     

  5. #4  
    Forum Bachelors Degree
    Join Date
    Mar 2008
    Location
    Canada
    Posts
    414
    mostly dark matter though
    "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt" - Bertrand Russell
    Reply With Quote  
     

  6. #5 From the WMAP Survey 
    Forum Senior
    Join Date
    Apr 2008
    Posts
    354
    "The contents of the Universe include 4% atoms (ordinary matter), 23% of an unknown type of dark matter, and 73% of a mysterious dark energy."
    Reply With Quote  
     

  7. #6 Re: our galaxy 
    Suspended
    Join Date
    May 2008
    Posts
    1,096
    Quote Originally Posted by lavender
    what's outside of the milkyway
    Our galaxy is just one of 100,000,000,000 galaxies. Between them, there is often millions of light years of "space". Our galaxy does have two tiny satellite galaxies.

    Our neighbourhood:


    http://en.wikipedia.org/wiki/Local_Group
    Reply With Quote  
     

  8. #7  
    Forum Junior SolomonGrundy's Avatar
    Join Date
    Sep 2007
    Location
    USA
    Posts
    232
    what's outside of the milkyway ?
    life.
    Solomon Grundy
    In 1944, this creature rose from the swamp, with tremendous strength and some dormant memories that for example allowed him to speak English, but not knowing what he was, and not remembering Cyrus Gold or his fate. Wandering throughout the swamp, he encountered two escaped criminals, killed them, and took their clothes. When they asked him his name, he simply muttered that he had been born on Monday. Reminded of an old nursery rhyme about a man born on Monday, the thugs named the creature "Solomon Grundy".
    Reply With Quote  
     

  9. #8 Re: From the WMAP Survey 
    Forum Junior
    Join Date
    Feb 2008
    Posts
    213
    Quote Originally Posted by Arch2008
    "The contents of the Universe include 4% atoms (ordinary matter), 23% of an unknown type of dark matter, and 73% of a mysterious dark energy."
    Do they call it dark because it is not observable yet? Just mathmatically placed?
    Reply With Quote  
     

  10. #9  
    Forum Senior
    Join Date
    Apr 2008
    Posts
    354
    The Wilkinson Microwave Anisotropy Probe (WMAP) shed some light on dark matter. Apparently it was here right from the beginning of the universe. Some candidates for DM are MACHOS (MAssive Compact HalO objectS) and WIMPS (Weakly Interactive Massive ParticleS). MACHOS are described as brown dwarf stars or minor black holes in the halo of a galaxy, whereas WIMPS are simply nuclear particles that interact weakly with the electromagnetic force, so they can essentially float right through your molecules and do not reflect light, etc. Since there were no stars at the beginning of the universe, I think that WIMPS are the most likely candidate.

    Scientists added up an approximate mass of the universe and measured the increase in acceleration in the expansion of the universe since the Big Bang. They then calculated how much energy it would take to give the mass of the universe this acceleration. The result is called Dark Energy. We really know very little about it.
    Reply With Quote  
     

  11. #10  
    Suspended
    Join Date
    Jan 2005
    Location
    Nashville
    Posts
    317
    Can someone prove to me that there is such a thing as dark matter?
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •