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%
71
flagVietnam
3%
96%
0%
0%
27
flagItaly
8%
82%
7%
1%
67
flagSpain
10%
82%
3%
3%
28
flagNew Zealand
19%
76%
0%
4%
21
flagFrance
25%
72%
0%
2%
47
flagthe United Arab Emirates
17%
71%
4%
6%
45
flagGermany
23%
68%
4%
2%
235
flagPoland
27%
61%
7%
3%
12219
flagthe United Kingdom
27%
58%
8%
4%
412
flagRepublic of Ireland
23%
58%
11%
5%
34
flagthe Netherlands
31%
53%
11%
2%
45
flagthe United States
36%
49%
8%
3%
542
flagIndia
35%
49%
11%
1%
251
flagUnknown
47%
44%
5%
2%
74
flagCanada
40%
42%
12%
4%
47
flagthe Philippines
30%
41%
22%
2%
36
flagNorway
45%
41%
9%
3%
31
flagPakistan
36%
36%
21%
5%
19
flagAustralia
39%
30%
17%
8%
23

Gender

men66%
women65%
50%
24%
24%
59%
66%
65%
80%
5%
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?
1297
47%

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