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"the greatest trick the devil ever pulled was convincing the world he didn't exist"

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'i'm the one who's got to die when its time for me to die, so let me live my life the way i want to' - Jimi Hendrix

When you look at something directly, you mainly use the "cones" on your retina. The cones are more concentrated in the center of your field of view, and they are responsible for colour vision. Around the edge of your vision, you mostly rely on the "rods" which are not colour sensitive, but are used in low-light conditions. Therefore your periphial vision has better "night vision" abilities. That is why when you look at a faint star in the sky, you can see it better if you don't stare directly at it. And you'll notice that if you switch a faint point of light from the edge of your vision to staring directly at it, it will seem that the light disappears...

knew those biology classes would come in handy...

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-Look Charlie, we're really high now.-