The largest human space object in space is the International Space Station, with the largest dimension at some 100 meters.
Lets depict that as a 2x2 pixel on a very good display (400 Pixels Per Inch as in iPhones).
The actual size - on the display - is about 0.1 by 0.1 millimeters
The ISS "flies" at some 400 km - that's 4,000 times the size of the ISS, so on your high ppi diplay the Earth (ground) would start at 40 cm or some 16 inches.
As the Earth diameter is 12,800,000 meters (128,000 times larger than the ISS), its apparent size would be 12800 mm or almost 13 meters.
Lets continue with the fun. The geo-stationary satellites orbit at 36,000 km - if you want to depict their entire orbit it's 72 million meters, or 720k times ISS size, or 72 meters of iPhone displays.
Putting iPhones edge to edge (at some 70x140mm), you would need about half a million of them to create the needed surface.
And, at 50 meters per pixel, assuming you don't paint anything larger than half a pixel (25 meters), you wouldn't see almost anything else - even the mighty Saturn V (which put men on the Moon) had a second stage marginally shorter than 25 meters.
Meanwhile, the Space Shuttle (entire complex) was 50+ meters long with the orbiter (the Shuttle itself) 37 meters long (sub-pixel size).
So, half a million iPhone displays just to show the Space Shuttle as a pixel somewhere.