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
flagBelarus
16%
8%
25%
50%
12
flagCanada
39%
7%
14%
39%
28
flagFrance
35%
7%
14%
35%
14
flagPoland
33%
16%
15%
33%
7874
flagthe United Kingdom
35%
13%
15%
32%
110
flagGreece
25%
18%
25%
31%
16
flagPakistan
41%
12%
8%
29%
24
flagUkraine
46%
10%
13%
26%
73
flagthe United States
35%
19%
17%
25%
247
flagAustralia
27%
11%
33%
25%
36
flagUnknown
31%
15%
31%
21%
32
flagIndia
35%
17%
24%
19%
329
flagRussia
38%
22%
20%
18%
49
flagthe Netherlands
38%
30%
15%
15%
13
flagthe Philippines
62%
6%
21%
6%
32
flagGermany
58%
19%
16%
6%
31
flagNew Zealand
50%
10%
40%
0%
10