Editing 2761: 1-to-1 Scale

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The joke of this comic appears to be that when planets are indeed displayed at a 1:1 scale, it is almost impossible to tell their relative sizes, even when the image technically shows (part of) each of the planets
 
The joke of this comic appears to be that when planets are indeed displayed at a 1:1 scale, it is almost impossible to tell their relative sizes, even when the image technically shows (part of) each of the planets
  
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The reason why each planet's circular border appears straight is because it's such a small area of each planet: you're only seeing a couple of square inches of the surface of each of the planets, and even though they are all round, the curvature would be imperceptible on this scale. The four gas giants are completely smooth, whereas the four rocky planets display features, most notably on Earth where grass and an ant are visible.  
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The reason why each planet's circular border appears straight is because it's such a small area of each planet: you're only seeing a couple of square inches of the surface of each of the planets, and even though they are all round, the curvature would be invisible on this scale. The four gas giants are completely smooth, whereas the four rocky planets display features, most notably on Earth where grass and an ant are visible.  
  
 
That it cannot have been an image of the real planets aligning is clear, as Mercury can be shown to be in front of Jupiter (implying that the latter is in the part of its orbit on the far side of the Sun from the viewer), yet Jupiter obscures Earth (which necessitates that it be in the arc of orbit ''nearest'' any given observer). In other words, there is no possible real alignment of the planets in which Jupiter passes between Mercury and Earth. In the title text it is made clear that this is just a small part of a larger drawing, so this is not an image taken from far away – they are only placed this way for scale.
 
That it cannot have been an image of the real planets aligning is clear, as Mercury can be shown to be in front of Jupiter (implying that the latter is in the part of its orbit on the far side of the Sun from the viewer), yet Jupiter obscures Earth (which necessitates that it be in the arc of orbit ''nearest'' any given observer). In other words, there is no possible real alignment of the planets in which Jupiter passes between Mercury and Earth. In the title text it is made clear that this is just a small part of a larger drawing, so this is not an image taken from far away – they are only placed this way for scale.

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