The Earth takes up much less than a pixel in the image, a combination of other factors cause it to be much more visible than it "should" be, see: http://en.wiki

The Earth takes up much less than a pixel in the image, a combination of other factors cause it to be much more visible than it "should" be, see: http://en.wikipedia.org/wiki/Pale_Blue_Dot http://en.wikipedia.org/wiki/Pale_Blue_Dot