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%
44
flagSpain
12%
83%
0%
4%
24
flagItaly
8%
81%
8%
1%
58
flagNew Zealand
19%
76%
0%
4%
21
flagFrance
33%
66%
0%
0%
30
flagGermany
30%
60%
5%
3%
155
flagPoland
29%
58%
7%
3%
10107
flagSwitzerland
31%
56%
0%
6%
16
flagthe United Kingdom
30%
54%
7%
5%
324
flagRepublic of Ireland
25%
54%
16%
4%
24
flagIndia
32%
52%
10%
2%
206
flagthe United States
38%
45%
9%
3%
451
flagCanada
38%
45%
11%
4%
42
flagNorway
40%
44%
11%
3%
27
flagthe United Arab Emirates
33%
38%
11%
16%
18
flagPakistan
36%
36%
21%
5%
19
flagthe Netherlands
42%
36%
10%
5%
19
flagthe Philippines
34%
34%
23%
3%
26
flagAustralia
35%
30%
20%
10%
20
flagIndonesia
36%
27%
18%
18%
11

Gender

men64%
women62%
50%
25%
26%
59%
64%
62%
80%
6%
9%
100%
3%
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?
1108
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