[Challenge] If you could right-click the sky...

[Daemian]

And save the huge image to your desktop, what resolution -in pixels- you think it would have? approximately.

Explain the formula you used to reach your conclusion.

[DnALANGE]

600 x 400
Because that is the size it says ^^ HEhEHheheee

[BAndrew]

I don't think that what you ask can be done, unless you can use a ruler (for example) to compare your monitor's size with the image's size.

so if a is picture's size and b is your monitor's size (which you know it):
and for instance
a/b = 1/4 =?
a= 1/4 * b
you know b, so bingo

[Traggey]

Yeah my downloader kind of, gives the resolution away..

M'yeah.

[Daemian]

Lol.
Come on, you know what I mean, let me rephrase the question:

If you could measure the resolution of the sky in pixels what would it be?
And how did you get to that result?

[BAndrew]

No I don't understand.

Do you mean the real sky or the sky in the picture?

[Daemian]

@DnALANGE
Not the image I put, the whole sky.

@BAndrew
@Traggey
Ok, you download the image, but the question is what's the resolution the image would have?
Or what would your computer say the resolution is?

The idea is to offer a clever idea to measure it up.

[Googolplex]

The pixels are as much as the picture is. The sky is 3D while a picture is 2D - you can't calculate pixels of a real 3D object/location. Also the sky doesn't end with the clouds, there is a lot behind we can't see with a camera.

Not the image I put, the whole sky.

The whole sky doesn't have any pixels.

[BAndrew]

The pixels are as much as the picture is. The sky is 3D while a picture is 2D - you can't calculate pixels of a 3D reality sky.

That's correct. I don't think the question makes much sense.

[Googolplex]

His question makes sense if he means atoms instead of pixels. This could be almost the same.
But the problem is that the human eye doesn't have a 360° view of the sky and we don't know our position in the universe.

The universe is 13,7 billion years old, that means a space of

299792,458 x 60 x 60 x 23,94 x 365,24 x 13700000000 = 129284437743762600000000 km (129,28 sextillion)

And then you have to know how many atoms per km are. This amount is very different and you also should know that an atom is not the smallest piece.

The number of atoms in the universe is 10^78.

1000000000000000000000000000000000000000000000000000000000000000000000000000000

10^100 would mean 1 Googol
10^Googol would mean 1 Googolplex