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
18%
9%
27%
45%
11
flagCanada
40%
7%
14%
37%
27
flagFrance
36%
9%
9%
36%
11
flagPoland
33%
16%
15%
33%
7677
flagthe United Kingdom
37%
12%
17%
30%
99
flagPakistan
41%
12%
8%
29%
24
flagUkraine
41%
13%
13%
28%
53
flagGreece
28%
14%
28%
28%
14
flagthe United States
35%
19%
17%
25%
240
flagAustralia
30%
13%
30%
23%
30
flagUnknown
31%
15%
31%
21%
32
flagIndia
35%
17%
25%
20%
312
flagRussia
41%
19%
19%
19%
46
flagthe Netherlands
33%
33%
16%
16%
12
flagGermany
60%
17%
14%
7%
28
flagthe Philippines
62%
6%
21%
6%
32
flagNew Zealand
50%
10%
40%
0%
10