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  • Dark Matter in the Universe


    Added on Saturday 27 June 2009 09:55:47
    by cronoslogic
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    This is an ESA presentation explaining the known science of Dark Matter up to this point in history. A very interesting video.

    To find out more about the ESA, please visit: http://www.esa.int

    This video has been released in the public domain by the ESA and all credit is to ESA for the production of this material.



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  • avraks

    Think of light as tiny particles. Just like a sattelite orbiting around earth, light is affected by gravety. When it passes a planet, its "orbit" is just slightly altered, as it travels at such a high speed. However, a black hole has a much larger gravitiational pull than a planet, and can cause light to enter orbit, just like a satelite would around earth. A star also has the gravity to change the path of light being emited by a star behind it. The star farthest star would look like a halo.
    Tuesday 16 February 2010 16:16:26
  • avraks

    I heard some string theorists speculate about Dark Matter possibly being matter, traveling backwards in time. Intriguing idea, at the very least, and it would explain why it does not emit light, I believe =)
    Tuesday 16 February 2010 16:09:06
  • lumpybruisychickeny1

    Enthusiasm?
    Wednesday 18 November 2009 05:28:59
  • doctoroccy

    i think there has to something in the line of sight ie a black hole, galaxy, sun etc for light to bend. i think its called lensing or microlensing.
    Tuesday 21 July 2009 05:13:25
  • juble2

    does the sight of the hubble, or light just get bent by nothing? Or does there have to be something in they way for it to happen. And that's where they got dark matter from?
    Tuesday 14 July 2009 20:03:06
  • grummeper

    Thanks!
    Wednesday 08 July 2009 13:25:18
  • 1seedeadp3ople

    hey man finnaly another vid... about time :) good vid!
    Sunday 28 June 2009 06:23:47
  • TriggerZz

    Awsome
    Saturday 27 June 2009 20:15:20
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