What part of the Moon surface had been known to humanity before the first photos of the dark side were taken in 1959?

50%
59%
80%
100%
Moon's li­bra­tion changes the angle from which the Moon is seen, allowing about 59% of its surface to be seen from the Earth (but only half at any in­stan­t). Moon's li­bra­tion is caused by the ec­cen­tric­i­ty of its orbit around Earth and by a slight in­cli­na­tion of its axis of ro­ta­tion.

Answers distribution

50%
59%
80%
100%
answers
flagFinland
0%
100%
0%
0%
63
flagSpain
11%
85%
0%
3%
27
flagItaly
8%
81%
8%
1%
58
flagNew Zealand
19%
76%
0%
4%
21
flagFrance
25%
74%
0%
0%
39
flagGermany
28%
61%
5%
2%
171
flagPoland
29%
59%
7%
3%
10879
flagSwitzerland
29%
58%
0%
5%
17
flagthe United Kingdom
29%
55%
8%
4%
352
flagRepublic of Ireland
28%
52%
16%
4%
25
flagIndia
33%
51%
11%
2%
228
flagUU
42%
50%
7%
0%
26
flagthe United Arab Emirates
30%
47%
8%
13%
23
flagthe United States
37%
46%
8%
3%
481
flagCanada
37%
44%
13%
4%
45
flagNorway
44%
41%
10%
3%
29
flagthe Netherlands
40%
36%
13%
4%
22
flagPakistan
36%
36%
21%
5%
19
flagthe Philippines
34%
34%
23%
3%
26
flagAustralia
35%
30%
20%
10%
20

Gender

men65%
women63%
50%
25%
25%
59%
65%
63%
80%
6%
8%
100%
2%
2%

Language versions

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answers
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What part of the Moon surface had been known to humanity before the first photos of the dark side were taken in 1959?
1181
47%

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