This plaque, carried by Pioneer 10 and Pioneer 11 space probes, describes the location of the Sun. What are the points at the ends of the lines?

planets of the Solar System
galaxies
quasars
pulsars
Each of the line includes binary encoding of pulsar frequency, so these can be easily recognized. The hydrogen spin-flip transition frequency is used as the unit of time (Hydrogen particle at the top of the image).
Sophie Letherman
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Very interesting!
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Answers by country

planets of the Solar System
galaxies
quasars
pulsars
answers
flagCanada
40%
6%
12%
40%
32
flagthe United Arab Emirates
45%
9%
9%
36%
11
flagGreece
23%
17%
23%
35%
17
flagthe United Kingdom
34%
12%
16%
34%
129
flagPoland
32%
16%
15%
33%
8525
flagBelarus
22%
16%
27%
33%
18
flagFrance
35%
11%
17%
29%
17
flagAustria
21%
28%
21%
28%
14
flagthe United States
35%
18%
17%
27%
276
flagAustralia
28%
10%
33%
25%
39
flagPakistan
40%
15%
12%
25%
32
flagUkraine
45%
12%
14%
24%
101
flagRussia
39%
18%
18%
22%
94
flagUnknown
31%
15%
31%
21%
32
flagthe Netherlands
30%
30%
20%
20%
20
flagIndia
35%
19%
23%
19%
396
flagGermany
51%
17%
14%
17%
41
flagKazakhstan
30%
10%
50%
10%
10
flagthe Philippines
62%
8%
20%
5%
35
flagNew Zealand
50%
10%
40%
0%
10