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
flagFrance
30%
10%
10%
40%
10
flagCanada
38%
7%
15%
38%
26
flagGreece
33%
0%
33%
33%
12
flagPoland
33%
16%
15%
32%
7415
flagthe United Kingdom
38%
12%
14%
31%
88
flagPakistan
41%
12%
8%
29%
24
flagUkraine
39%
11%
16%
27%
43
flagthe United States
34%
19%
18%
25%
229
flagIndia
35%
17%
23%
21%
278
flagRussia
41%
19%
17%
21%
41
flagUnknown
31%
15%
31%
21%
32
flagAustralia
32%
14%
28%
21%
28
flagthe Netherlands
36%
27%
18%
18%
11
flagGermany
58%
20%
12%
8%
24
flagthe Philippines
66%
6%
16%
6%
30
flagNew Zealand
50%
10%
40%
0%
10