Recent content by Stark

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    Is there evidence to support past life on Mars?

    Considering the amount of water on Earth, compared to that of Mars and considering how long it took for Earth to develop life, I'm surprised anyone even considers it.
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    How would you see an Event horizon?

    As I understand it, an Event Horizon is a boundary surrounding a black hole where light is held 'still'. If the photons never get beyond this boundary, how can they be observed?
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    Where do the 'bars' in a barred spiral come from?

    I didn't really mean an ejection in the form of say, a blender with it's lid removed continually throwing its contents out, but more a body of mass restricted by it's own gravity that was getting denser and therefore faster in its rotation until its contents could achieve the escape velocity...
  4. S

    Where do the 'bars' in a barred spiral come from?

    I was wandering what the general belief of why barred spiral galaxies, contain 'bars' as straight lines in nature are pretty rare. To my untrained and unqualified eye, it clearly looks - on all the photographs that I've seen - as if there are two 'bars' being emitted from the opposite sides of...
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