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If the Moon were only one pixel: http://joshworth.com/dev/pixelspace/pixelspace_solarsystem.h...

I know that one. I would like the whole solar system in one image. So that it fits on my screen without scrolling.

What I meant linking that:

According to that page the solar system's radius is ~6000000000km. Lets assume a 4096px wide desktop. Each pixel is ~1500000km. The Sun's radius is ~700000km, so definitely sub-pixel size.

Using your figures each pixel is ~1.5E9 m and the Sun's diameter is ~1.4E9 m, which would be 1 pixel with appropriate rounding; so you'd see the sun.

If the moon is only one pixel in an image that doesn't fit on your screen, then it would be invisible in an image that does. It would be impossible to get the whole solar system in one image that fits on your current screen without scrolling. So, what you would really like is a higher resolution screen.

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